Investigation Summary
The aircraft, serial number 44-83325, was a Boeing B-17G recently manufactured at the Douglas factory in Long Beach, California. While it had not yet been assigned to a combat squadron, it was assigned to the 1379 Base Unit of the 15th Air Force for the duration of its ferry mission to Italy. The flight had completed a stopover at Meeks Field in Iceland and was en route to RAF Valley on the Isle of Anglesey. The flight plan called for the crew to follow the west coast of Scotland southwards. While a high-pressure system was over the British Isles, it created a persistent layer of grey overcast at low levels, a common meteorological phenomenon in early spring. The crew made routine contact with RAF Stornoway, but shortly thereafter, the aircraft deviated from its intended path or altitude. Eyewitnesses in Staffin observed the bomber flying east to west, appearing to search for bearings beneath an 800-foot cloud ceiling. The aircraft impacted the precipitous eastern escarpment of Beinn Edra, which rises sharply to 2,005 feet. Recovery efforts were exceptionally difficult due to the unstable terrain; personnel from No. 56 Maintenance Unit had to use ropes to dislodge wreckage from the cliffs, a process that resulted in one recovery worker being injured by a falling oil cooler.
Final Conclusions
The accident was caused by controlled flight into terrain (CFIT) resulting from the pilot's attempt to navigate at low altitude in conditions of poor visibility and low cloud cover. The aircraft struck the mountain while the crew was likely attempting to maintain visual contact with the ground beneath a low overcast layer. Although the official report initially suggested the plane was flying east toward the mainland, later archaeological investigations and eyewitness accounts confirmed the aircraft was heading west when it struck the eastern face of the ridge.
Video Analysis
No video analysis linked for this case file yet.
Systems & Failure Modes
Visual Flight Rules (VFR) Navigation
The crew was attempting to navigate by visual reference to the coastline and terrain under a low cloud ceiling, which led to the impact when the terrain rose above the cloud base.
Interesting Facts
- 01The aircraft was brand new and had not yet been assigned to a combat unit.
- 02All nine crew members were between the ages of 19 and 23.
- 03Significant wreckage, including undercarriage legs and engine debris, remains at the crash site on the Trotternish Ridge.
- 04The crash site is protected under British law as a historic aircraft wreck.
- 05A memorial plaque was placed at the site by the families of the crew, and their names were added to the Staffin War Memorial in 2015.
Safety Actions & Advisories
Recovery Safety Protocols
The recovery operation by No. 56 Maintenance Unit highlighted the dangers of 'trundling' wreckage down steep cliffs, after a recovery worker was injured by a falling oil cooler. Subsequent recovery operations in the Scottish Highlands emphasized the need for secure exclusion zones below active recovery sites.
Known Controversies & Unanswered Questions
Flight Direction Discrepancy
Reference ↗Official records initially stated the aircraft was flying east toward the mainland, but local eyewitness accounts and a 2011 investigation by the University of Glasgow confirmed the aircraft was actually heading west when it struck the ridge.