What happened
On 25 October 2008, a Piper PA 28-180 Archer, registration G-BGTJ, departed Gloucestershire Airport in the United Kingdom, bound for Kilrush Airfield in Co. Kildare. The flight was conducted under Visual Flight Rules (VFR). After crossing the Irish Sea, the aircraft established contact with Dublin Air Traffic Control, reporting its position near the coast at Newcastle, Co. Wicklow.
At 11:17 UTC, the pilot requested to continue via independent navigation and closed the flight plan. The final radar contact occurred at 11:26 UTC, with the aircraft flying at 3,300 feet on a westerly heading near Glenmacnass Waterfall. During this period, the weather was characterized by heavy rain, low cloud, and intense winds gusting above 50 knots.
Following reports that the aircraft was overdue, a search operation was launched. The wreckage was discovered the next morning near the summit of Corriebracks Mountain. The impact occurred in a boggy area at an altitude of 1,500 feet. All four occupants of the aircraft sustained fatal injuries.
The investigation
The AAIU examined the flight history, aircraft maintenance records, and environmental conditions. The investigation established that the aircraft was properly maintained, correctly loaded, and possessed a valid Certificate of Airworthiness. The pilot was fully licensed with valid instrument and night ratings.
Investigators analyzed witness accounts, which placed the aircraft at low levels, maneuvering in and out of cloud cover. Evidence from the wreckage indicated a relatively low-speed impact in a nose-down attitude. The investigation also noted that the pilot had been involved in a physical assault the previous day, which left him in a state of shock, though no physical injuries were reported from that incident.
Findings
- The aircraft encountered severe turbulence and mountain wave activity while flying over mountainous terrain.
- The pilot likely experienced a loss of situational awareness during the final stages of the flight, leading the aircraft toward high ground in poor visibility.
- The aircraft entered an aerodynamic stall at a low altitude, leaving insufficient height for recovery.
- Contributing factors included the aircraft turning downwind during severe gusts, which caused a significant loss of airspeed, and the operation of the aircraft at low levels with minimal terrain clearance.