Investigation Summary
Pan Am Flight 292 was a multi-stop scheduled service from Martinique to New York. On the 158-nautical-mile leg to Antigua, the crew encountered significant cumulonimbus activity. To avoid the worst of the weather, the captain likely elected to deviate to the west of the direct track. This deviation, combined with the high speed of the jet aircraft compared to the crew's extensive but mostly piston-engine experience, likely led to a loss of situational awareness. The crew reported descending through 4,000 feet without the field in sight and was observed by witnesses on Montserrat flying below the cloud base with landing gear down and flaps partially extended. The investigation noted that while the crew was highly experienced, both the Captain and First Officer had fewer than 300 hours on the Boeing 707. The lack of flight recorder data (due to its destruction) prevented a precise reconstruction of the flight path, but the wreckage analysis confirmed the aircraft was under control and mechanically sound at the moment of impact.
Final Conclusions
The investigation concluded that the accident was the result of the aircraft descending below a safe height when its position had not been accurately established. Contributing factors included poor weather conditions (thunderstorms and heavy rain) and the crew's relative inexperience with high-speed jet operations, which may have compressed their available time for navigation and decision-making during the short flight sector.
Video Analysis
No video analysis linked for this case file yet.
Airframe & Maintenance
Crew Experience
Captain
Hugh Henderson, age 43.
First Officer
John A. McNichol, age 43.
Systems & Failure Modes
Weather Radar
The aircraft was equipped with weather radar which would have shown the thunderstorm activity, likely prompting the crew's decision to deviate from the direct track.
ADF and VOR Receivers
Navigational aids used for position fixing; while the aircraft was equipped with dual installations, only one VOR receiver was recovered in a condition allowing for frequency identification (tuned to Guadeloupe VOR).
Flight Data Recorder
The unit was recovered but was so severely damaged by the impact and fire that no data could be retrieved.
Interesting Facts
- 01The aircraft, N708PA 'Clipper Constitution', was the first Boeing 707 ever built, having made its first flight on December 20, 1957.
- 02The crash site was located 242 feet below the 3,002-foot summit of Chances Peak.
- 03The flight was operating in an area of substantial cumulonimbus cloud and thunderstorm activity.
- 04Both the Captain and First Officer had fewer than 300 hours of experience on the Boeing 707 type.
- 05The flight recorder was destroyed in the crash and subsequent fire, precluding a certain knowledge of the exact route followed.
- 06Topographical charts of the area were found inside the captain's briefcase rather than in use on the flight deck.
Safety Actions & Advisories
Navigational Chart Accessibility
Source ↗The investigation highlighted that topographical charts were not in active use on the flight deck. Safety recommendations emphasized the necessity for crews to have relevant terrain charts readily accessible during short-sector flights in mountainous regions.
Position Verification Procedures
Source ↗Following the accident, emphasis was placed on the requirement for positive identification of navigational fixes before descending below Minimum Sector Altitudes (MSA), particularly when deviating from standard tracks for weather avoidance.