McGuire - Mildenhall - Torrejón

The Starlifter registered 67-0006 had a recent history of weather radar problems. It had been written up by crew members eight times previously. On the day of the accident the maintenance crewman, unaware of the previous problems, checked the radar. It seemed to be working, so it was signed off as "Ops Check Okay". Shortly after takeoff from McGuire AFB, the crew noticed that the radar was inoperative. Since severe weather was not forecast, they elected to continue to RAF Mildenhall, UK. Two hours after takeoff, British forecasters issued a SIGMET for "Moderate to occasional severe clear air turbulence from FL240 to FL400", but the crew never got this report. Four hours after takeoff the crew updates the weather forecast. They receive a weather forecast of "3/8 at 3000 feet, 4/8 at 4000 feet with an intermittent condition of wind 030/12 gusting 22, visibility five miles in thunderstorms, 2/8 at 2000 feet 5/8 at 2500 feet". The crew then attempted to get an update one hour from Mildenhall, but was unable to contact the base. Another station reported "4/8 Thunderstorms tops to FL260". During the enroute decent they entered the clouds. At FL150, they requested vectors around the weather. Because the primary radar was inoperative, the controller advised that he would have difficulty providing avoidance vectors. The aircraft then entered the leading edge of a very strong line of thunderstorm cells. One estimate indicated they encountered a 100 mph downward vertical airshaft. The right wing had failed, followed quickly by the upper half of the vertical stabilizer, and the four engines. Source: C-141 Lifetime Mishap Summary / Lt. Col. Paul M. Hansen

Flight / Schedule

McGuire - Mildenhall - Torrejón

Registration

67-0006

MSN

300-6259

Year of Manufacture

1967

Date

August 28, 1976 at 12:40 PM

Type

CRASH

Flight Type

Military

Flight Phase

Flight

Crash Site

Plain, Valley

Crash Location

Peterborough Cambridgeshire

Region

Europe • United Kingdom

Coordinates

52.5726°, -0.2427°

Crash Cause

Weather

Narrative Report

On August 28, 1976 at 12:40 PM, McGuire - Mildenhall - Torrejón experienced a crash involving Lockheed C-141 Starlifter, operated by United States Air Force - USAF, with the event recorded near Peterborough Cambridgeshire.

The flight was categorized as military and the reported phase was flight at a plain, valley crash site.

18 people were known to be on board, 18 fatalities were recorded, 0 survivors were identified or estimated. This corresponds to an estimated fatality rate of 100.0%.

Crew on board: 4, crew fatalities: 4, passengers on board: 14, passenger fatalities: 14, other fatalities: 0.

The listed crash cause is weather. The Starlifter registered 67-0006 had a recent history of weather radar problems. It had been written up by crew members eight times previously. On the day of the accident the maintenance crewman, unaware of the previous problems, checked the radar. It seemed to be working, so it was signed off as "Ops Check Okay". Shortly after takeoff from McGuire AFB, the crew noticed that the radar was inoperative. Since severe weather was not forecast, they elected to continue to RAF Mildenhall, UK. Two hours after takeoff, British forecasters issued a SIGMET for "Moderate to occasional severe clear air turbulence from FL240 to FL400", but the crew never got this report. Four hours after takeoff the crew updates the weather forecast. They receive a weather forecast of "3/8 at 3000 feet, 4/8 at 4000 feet with an intermittent condition of wind 030/12 gusting 22, visibility five miles in thunderstorms, 2/8 at 2000 feet 5/8 at 2500 feet". The crew then attempted to get an update one hour from Mildenhall, but was unable to contact the base. Another station reported "4/8 Thunderstorms tops to FL260". During the enroute decent they entered the clouds. At FL150, they requested vectors around the weather. Because the primary radar was inoperative, the controller advised that he would have difficulty providing avoidance vectors. The aircraft then entered the leading edge of a very strong line of thunderstorm cells. One estimate indicated they encountered a 100 mph downward vertical airshaft. The right wing had failed, followed quickly by the upper half of the vertical stabilizer, and the four engines. Source: C-141 Lifetime Mishap Summary / Lt. Col. Paul M. Hansen

Aircraft reference details include registration 67-0006, MSN 300-6259, year of manufacture 1967.

Geospatial coordinates for this crash are approximately 52.5726°, -0.2427°.

Fatalities

Total

18

Crew

4

Passengers

14

Other

0

Crash Summary

The Starlifter registered 67-0006 had a recent history of weather radar problems. It had been written up by crew members eight times previously. On the day of the accident the maintenance crewman, unaware of the previous problems, checked the radar. It seemed to be working, so it was signed off as "Ops Check Okay". Shortly after takeoff from McGuire AFB, the crew noticed that the radar was inoperative. Since severe weather was not forecast, they elected to continue to RAF Mildenhall, UK. Two hours after takeoff, British forecasters issued a SIGMET for "Moderate to occasional severe clear air turbulence from FL240 to FL400", but the crew never got this report. Four hours after takeoff the crew updates the weather forecast. They receive a weather forecast of "3/8 at 3000 feet, 4/8 at 4000 feet with an intermittent condition of wind 030/12 gusting 22, visibility five miles in thunderstorms, 2/8 at 2000 feet 5/8 at 2500 feet". The crew then attempted to get an update one hour from Mildenhall, but was unable to contact the base. Another station reported "4/8 Thunderstorms tops to FL260". During the enroute decent they entered the clouds. At FL150, they requested vectors around the weather. Because the primary radar was inoperative, the controller advised that he would have difficulty providing avoidance vectors. The aircraft then entered the leading edge of a very strong line of thunderstorm cells. One estimate indicated they encountered a 100 mph downward vertical airshaft. The right wing had failed, followed quickly by the upper half of the vertical stabilizer, and the four engines. Source: C-141 Lifetime Mishap Summary / Lt. Col. Paul M. Hansen

Cause: Weather

Occupants & Outcome

Crew On Board

4

Passengers On Board

14

Estimated Survivors

0

Fatality Rate

100.0%

Known people on board: 18

Operational Details

Schedule / Flight

McGuire - Mildenhall - Torrejón

Flight Type

Military

Flight Phase

Flight

Crash Site

Plain, Valley

Region / Country

Europe • United Kingdom

Aircraft Details

Registration

67-0006

MSN

300-6259

Year of Manufacture

1967