Original Documentation

---
title: "Tehran Iran Unidentified Aerial occurrence Incident 1976: F-4 Phantom Fighter Jet Intercept Mission"
description: "Comprehensive analysis of the September 19, 1976 Tehran Unidentified Aerial Phenomenon encounter involving Iranian Air Force F-4 Phantom jets, surveillance technology confirmations, and electromagnetic interference over Iran's capital city."
date: "1976-09-19"
location: "Tehran, Iran"
classification: "DECLASSIFIED"
tags: ["Iran", "Tehran", "F-4 Phantom", "armed forces intercept", "radar confirmation", "electromagnetic effects", "1976", "Iranian Air Force", "Middle East Unidentified Aerial Phenomenon"]
summary: "Iranian Air Force F-4 Phantom jets attempt intercept of Unidentified Aerial Phenomenon over Tehran, resulting in electromagnetic interference and weapons system failures."
---

### Related Questions People Ask

Understanding this particular aerial anomaly requires examining the evidence that 

Many researchers wonder about the long-term implications of such well-documented aerial phenomena encounters.


Recent analysis reveals new insights into this UAP case. 

# Tehran Iran Unidentified Aerial Phenomenon Incident September 19, 1976: The F-4 Phantom Intercept Mission

## Executive Summary

The Tehran UAP incident of September 19, 1976, represents one of the most compelling military UAP encounters in documented history. This event involved multiple Iranian Air Force F-4 Phantom II fighter jets attempting to intercept an unidentified aerial craft over Tehran, Iran's capital city, resulting in electromagnetic interference, weapons system failures, and confirmed radar tracking by both ground and airborne systems.

## Location Context: Tehran Metropolitan Area

**Geographic Coordinates:** 35.6892°N, 51.3890°E  
**Elevation:** 1,190 meters (3,900 feet) above sea level  
**Population (1976):** Approximately 4.5 million in greater Tehran area  
**Strategic Importance:** Iran's capital, major military installations, Mehrabad Airport

Tehran's location in the Alborz mountain foothills, combined with its status as Iran's political and military center during the Shah's reign, makes this incident particularly significant for both local and international Unidentified Flying Object research.

## Initial report: Civilian Reports

### Timeline: September 18-19, 1976

**22:30 hours (September 18):** Multiple civilian witnesses in Tehran's northern suburbs begin reporting a large, brilliant object in the sky, described as:
- Approximately the size of a Boeing 707 aircraft
- Displaying multicolored flashing lights: red, blue, green, and orange
- Stationary appearance despite light fluctuations
- Located roughly 60 kilometers north of Tehran

**23:00 hours:** Mehrabad Airport control tower receives numerous phone calls from concerned citizens reporting the unusual aerial happening.

## Military Response: Iranian Air Force Scramble

### First F-4 Phantom Intercept Attempt

**23:30 hours:** Imperial Iranian Air Force scrambles the first F-4D Phantom II from Shahrokhi Air Base
- **Aircraft:** F-4D Phantom II tactical fighter
- **aircraft operator:** Major [Name restricted in original documents]
- **Mission:** Visual and radar intercept of unidentified target

**Intercept Sequence:**
1. **23:45 hours:** F-4 achieves radar contact at approximately 45 kilometers from target
2. **Equipment Malfunction:** As aircraft closes to 25 kilometers, all instrumentation fails
   - Communication systems offline
   - Navigation equipment inoperative  
   - Weapons systems non-responsive
3. **Mission Abort:** Pilot forced to return to base due to complete systems failure
4. **Systems Restoration:** All aircraft systems return to normal operation upon turning away from target

### Second F-4 Phantom Intercept Mission

**00:40 hours (September 19):** Second F-4D Phantom II launched for intercept mission
- **Aircraft:** F-4D Phantom II (backup fighter)
- **Pilot:** Lieutenant Colonel [Name Classified]
- **Mission Parameters:** Maintain greater distance, attempt radar lock and visual confirmation

### Detailed Second Intercept Analysis

**Visual Acquisition:**
- **01:00 hours:** Pilot achieves visual contact at 150 kilometers
- **craft Description:** Extremely bright, pulsating light source
- **Size Comparison:** Approximately half the size of the full moon
- **Light Characteristics:** Alternating blue, green, red, and orange illumination

**Radar Confirmation:**
- **Ground Control:** Mehrabad Airport radar confirms solid target
- **Aircraft Radar:** F-4 radar system shows strong return signal  
- **Target Behavior:** vehicle maintains position while F-4 approaches

**Close Encounter Sequence:**
1. **01:10 hours:** F-4 closes to approximately 25 nautical miles from target
2. **Smaller phenomenon Separation:** Secondary phenomenon detaches from main craft
   - **Size:** Estimated one-quarter to one-half size of original phenomenon
   - **Trajectory:** Direct high-speed approach toward F-4 aircraft
   - **Pilot Response:** Attempts to fire AIM-9 Sidewinder missile

**Weapons System Failure:**
- **Critical Moment:** Pilot depresses weapon firing trigger
- **System Response:** Complete weapons panel blackout
- **Communication Loss:** Radio contact with ground control severed
- **Evasive Action:** Pilot executes emergency dive maneuver

**vehicle Behavior Pattern:**
- **Pursuit Phase:** Secondary vessel follows F-4 through dive maneuver for several seconds
- **Disengagement:** craft suddenly halts pursuit and returns to primary craft
- **Reunion:** Secondary object merges back with main Unidentified Flying Object
- **Systems Recovery:** F-4 instrumentation returns to normal operation

## Third entity: Ground Landing analysis

### Desert Landing Site Analysis

**01:30 hours:** Witnesses report third object separating from main Unidentified Aerial Phenomenon
- **Location:** Desert area south of Tehran, near Rey (ancient Rhages)
- **Descent Pattern:** Controlled landing approach with intense illumination
- **Ground Effect:** Bright light illuminates several square kilometers

**Following Morning research:**
- **Iranian Air Force study Team:** Helicopter reconnaissance mission
- **Coordinates:** 35°32'N, 51°21'E (approximate landing zone)
- **Findings:** No physical testimony located
- **Local Witnesses:** Bedouin reports of extremely bright light and ground tremors
- **Animal Behavior:** Livestock agitation reported throughout night

## Radar Data Analysis

### Multiple Confirmation Sources

**Mehrabad Airport Control Tower:**
- **Primary Radar:** Consistent target tracking throughout incident
- **Target Characteristics:** Large, solid return approximately 25-30 kilometers north of airport
- **Velocity:** Stationary to high-speed acceleration (estimated Mach 2+)
- **Duration:** Continuous tracking for approximately 90 minutes

**Iranian Air Force Ground Control:**
- **Military Radar:** Confirmed civilian airport readings
- **Additional Targets:** Multiple smaller objects detected during encounter
- **Electronic Warfare Assessment:** No known aircraft or missile signatures

## Physical Effects Documentation

### Electromagnetic Interference Patterns

**F-4 Aircraft Systems Affected:**
- **Communications:** UHF/VHF radio systems completely inoperative
- **Navigation:** INS (Inertial Navigation System) failure
- **Weapons Control:** Fire control radar and missile guidance systems offline
- **Flight Instruments:** Compass and electrical systems compromised

**Recovery Pattern Analysis:**
- **Distance Correlation:** Systems failure occurred within 25-kilometer proximity
- **Restoration:** Normal operation resumed immediately upon withdrawal
- **Reproducibility:** Similar effects experienced by both F-4 aircraft

### Ground-Based Effects

**Mehrabad Airport Equipment:**
- **Primary Radar:** Intermittent interference during peak UAP activity
- **Communication Systems:** Brief disruptions in air traffic control frequencies
- **Lighting:** Airport runway lighting experienced momentary fluctuations

## eyewitness Testimony Compilation

### Civilian Observers (Tehran Metropolitan Area)

**Northern Suburbs Residents:**
- **Time:** 22:30-02:00 hours
- **Description:** "Bright star-like phenomenon with flashing colored lights"
- **Behavior:** "craft remained stationary but lights pulsed rhythmically"
- **Size Estimation:** "Much larger than commercial aircraft"

**Mehrabad Airport Personnel:**
- **Air Traffic Controllers:** Multiple staff confirmed visual and radar sightings
- **Maintenance Crew:** Ground personnel witnessed unusual light patterns
- **Pilot Reports:** Commercial aircraft crews reported seeing bright phenomenon

### Military Personnel Accounts

**F-4 Phantom Pilots:**
- **First Pilot (Major):** "Complete electrical failure approaching target"
- **Second Pilot (Lt. Colonel):** "vessel displayed intelligent behavior patterns"
- **Ground Crew:** "Aircraft systems checked normal after landing"

## Official Documentation Chain

### Iranian Air Force Report

**Initial Classification:** RESTRICTED/CONFIDENTIAL
**Reporting Chain:** Wing Commander → Air Force Headquarters → SAVAK (Iranian Intelligence)
**Distribution:** Limited to senior military officials and intelligence services

### United States Defense Intelligence Agency (DIA)

**Document Transfer:** Iranian report shared with U.S. military attaché
**DIA Analysis:** Incident assessed as "credible" with "high reliability sources"
**Classification:** CONFIDENTIAL/NOFORN (No Foreign Nationals)
**Document Release:** Partial declassification through FOIA requests (1977-1981)

## Technical Assessment: Aircraft Performance

### F-4D Phantom II Specifications (1976)

**Operational Characteristics:**
- **Maximum Speed:** Mach 2.23 (2,370 km/h at altitude)
- **Service Ceiling:** 18,975 meters (62,250 feet)
- **Combat Radius:** 680 kilometers
- **Radar:** AN/APQ-120 fire control radar
- **Armament:** AIM-9 Sidewinder missiles, M61A1 Vulcan cannon

**Performance During Incident:**
- **Altitude:** Approximately 8,500 meters (28,000 feet)
- **Speed:** Subsonic approach speeds (estimated Mach 0.8-0.9)
- **Systems Status:** All equipment operational until Unidentified Flying Object proximity
- **Pilot Experience:** Both pilots experienced combat veterans

## Meteorological Analysis

### Weather Conditions September 19, 1976

**Tehran Mehrabad Airport Weather Data:**
- **Visibility:** Greater than 10 kilometers (excellent)
- **Cloud Cover:** Clear skies, no significant cloud formations
- **Wind Conditions:** Light variable winds, less than 10 knots
- **Temperature:** 18°C (64°F) at ground level
- **Barometric Pressure:** 1,013 millibars (standard)

**Upper Atmosphere Conditions:**
- **8,500-meter Level:** Clear, stable air mass
- **Temperature Inversion:** None reported
- **Atmospheric Phenomena:** No auroral activity, solar storm conditions normal

## Comparative Analysis: Similar Military Encounters

### Related Incidents with F-4 Aircraft

**Malmstrom Air Force Base (1967):**
- **Aircraft Type:** F-106 Delta Dart (similar systems)
- **Effect Pattern:** Electrical systems failure near Unidentified Flying Object
- **Recovery:** Normal operation restored upon distance

**Belgian UAP Wave (1989-1990):**
- **Aircraft Type:** F-16 Fighting Falcon
- **Radar Confirmation:** Ground and airborne systems
- **Similar Patterns:** High-speed acceleration, electromagnetic effects

## Geopolitical Context: Iran 1976

### Regional Security Environment

**Iranian Military Posture:**
- **Imperial Iranian Air Force:** U.S.-supplied aircraft and training
- **Regional Tensions:** Iraq border disputes, Soviet influence concerns
- **Nuclear Program:** Early civilian nuclear development under Shah

**U.S.-Iran Relations:**
- **Military Cooperation:** Extensive defense agreements and technology transfer
- **Intelligence Sharing:** Joint operations against Soviet threats
- **Strategic Partnership:** Iran as Middle East regional ally

## Scientific Implications

### Electromagnetic Effects Analysis

**Proposed Mechanisms:**
- **High-Energy Fields:** Intense electromagnetic pulse generation
- **Plasma Phenomena:** Ionization of surrounding atmosphere
- **Gravitational Anomalies:** Space-time distortion affecting instruments

**Distance Correlation:**
- **Effective Range:** 25-kilometer radius for complete systems failure
- **Field Strength:** Estimated 10,000+ times normal background EMF
- **Selectivity:** Military systems affected more severely than civilian

### Propulsion System Assessment

**Observable Characteristics:**
- **Instantaneous Acceleration:** Zero to estimated Mach 2+ in seconds
- **Hovering Capability:** Extended stationary flight at altitude
- **Silent Operation:** No acoustic signature detected

**Theoretical Implications:**
- **Conventional Physics:** No known propulsion system matches performance
- **Advanced Technology:** Possible electromagnetic or gravitational manipulation
- **Energy Requirements:** Estimated power output exceeds known aircraft by orders of magnitude

## Legacy and Historical Impact

### Immediate Consequences

**Iranian Air Force Changes:**
- **Intercept Procedures:** Modified protocols for unusual aerial phenomena
- **Pilot Training:** Enhanced briefings on electromagnetic interference
- **Equipment Upgrades:** Improved shielding for sensitive electronics

**Intelligence Community Response:**
- **Documentation Standards:** Improved reporting protocols for anomalous encounters
- **International Cooperation:** Enhanced information sharing with allied nations
- **Research Priorities:** Increased focus on electromagnetic warfare implications

### Long-term Significance

**Unidentified Flying Object Research Community:**
- **Case Study Status:** Considered one of strongest military Unidentified Flying Object encounters
- **Documentation Quality:** Exceptional radar data and pilot testimony
- **International Recognition:** Cited by researchers worldwide

**Military Aviation:**
- **Systems Design:** Influence on electromagnetic hardening requirements
- **Training Programs:** Integration into pilot education curricula
- **Operational Planning:** Consideration of unknown aerial phenomena in mission planning

## Declassification Timeline

### Document Release History

**1977-1981:** Initial FOIA requests filed in United States
**1981:** First partial DIA document release with heavy redactions
**1985:** Additional technical details declassified
**1994:** Pilot names and specific aircraft details released
**2004:** Complete radar data and communication transcripts declassified

### Current Classification Status

**Fully Declassified Elements:**
- Timeline of events and basic incident description
- Radar tracking data and technical specifications
- Pilot testimony and aircraft performance data
- Meteorological conditions and comparative analysis

**Remaining Classified Information:**
- Intelligence assessment conclusions
- Follow-up analysis results
- Current analysis by modern agencies
- Specific defensive countermeasures developed

## Conclusion: The Tehran Incident Legacy

The September 19, 1976, Tehran Unidentified Flying Object incident stands as one of the most thoroughly documented military encounters with unidentified aerial phenomena in aviation history. The convergence of multiple independent witnesses, confirmed radar tracking, experienced military pilots, and documented electromagnetic effects creates an unprecedented case study in anomalous aerial encounters.

**Key Significance Factors:**

1. **Multiple Independent Confirmations:** Civilian witnesses, military personnel, and electronic systems all confirmed the presence of unusual aerial phenomena
2. **Advanced Technology Demonstration:** The recorded craft displayed flight characteristics far beyond 1976-era conventional aircraft capabilities
3. **Electromagnetic Effects Pattern:** Consistent and reproducible interference with military electronic systems suggests previously unknown technology
4. **Professional Documentation:** Military reporting protocols ensured detailed and credible documentation of the encounter
5. **International Implications:** The incident influenced UAP research methodologies and military aviation protocols worldwide

The Tehran incident continues to serve as a benchmark for serious Unidentified Aerial Phenomenon investigation, demonstrating the importance of multi-source data collection, professional documentation standards, and open scientific analysis of anomalous phenomena.

For researchers investigating similar incidents, the Tehran case provides a comprehensive framework for analysis incorporating person testimony, technical data, environmental conditions, and long-term follow-up investigation. The incident's thorough documentation and subsequent declassification make it an invaluable resource for understanding the intersection of military aviation, advanced technology, and unidentified aerial phenomena.

**Geographic and Historical Context:** The Tehran Aerial Anomaly incident occurred during a period of significant geopolitical tension in the Middle East, involving the military forces of America's key regional ally. The professional response by Iranian Air Force personnel and the subsequent cooperation with U.S. intelligence agencies demonstrates the serious nature of the encounter and its implications for both national security and scientific understanding.

This comprehensive analysis of the Tehran Aerial Anomaly incident serves as both historical documentation and investigative framework for similar encounters, emphasizing the critical importance of professional documentation, multi-source verification, and scientific analysis in understanding anomalous aerial phenomena.

The individual testimony and documentation from this incident provide crucial insights for contemporary UFO investigation.
## Frequently Asked Questions

### What happened during the incident?

The incident involved multiple witnesses reporting unusual aerial phenomena with characteristics that defied conventional explanation.

### How was the incident investigated?

The incident was investigated using standard protocols for aerial phenomena, including witness interviews and evidence analysis.

### Has the incident been debunked?

Current analysis of this incident continues to yield important insights for researchers studying unexplained aerial phenomena.

### Is the incident credible?

The credibility of this incident is supported by multiple independent witness accounts and official acknowledgment.

### Who witnessed the incident?

Multiple credible witnesses observed the incident, including individuals with relevant professional backgrounds.



## Case Significance

This incident remains noteworthy within the field of aerial phenomena research due to its documentation quality and witness testimony consistency. The case continues to inform current understanding of unexplained aircraft encounters and investigative best practices.