No fatalities

1996-03-24: Vickers Viscount (G-OPFE) — British World Airlines - BWA — Belfast-Aldergrove, United Kingdom

Belfast-Aldergrove, United KingdomLanding (descent or approach)

On March 24, 1996, a Vickers Viscount (registration G-OPFE) operated by British World Airlines - BWA was involved in an aviation accident near Belfast-Aldergrove, United Kingdom during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: Subsequent runway and aircraft examination showed that G-OPFE had made a gentle touchdown on Runway 07 close to the PAPI position, somewhat left of the centreline. Initial contact was on both inboard propeller tips. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781207171Data APIEditorial standards

During a training flight, the landing gear of G-OPFE was fully retracted at touchdown, despite the selector being in the 'Down' position. The aircraft slid down the runway, causing extensive damage to propellers, fuselage, and flaps.

Incident Summary

On a training flight from Belfast International Airport, a two-person crew conducted two flights in G-OPFE. The second flight, a training detail for a first officer's conversion to the left-hand seat, included a simulated engine failure and multiple approaches. After landing and repositioning, the crew departed for a VOR/DME approach to Runway 07 for a final landing. During the flare, the gear warning horn sounded, and shortly after, propeller contact with the runway was heard. The aircraft came to rest on the runway after a ground slide of approximately 480 metres.

Flight Details

The crew had two days off prior to the duty. They flew from Stansted to Belfast, checked into the hotel, and received a weather briefing at 1600 hrs. The first flight departed at 1827 hrs and successfully completed the required items, landing at 2010 hrs. After a brief with engines running, the second flight began at 2031 hrs. The training captain simulated an outboard engine failure after VR. The first officer executed a three-engine ILS approach and go-around to Runway 17, followed by a VOR approach to Runway 07. After landing, the first officer repositioned and made a full-power take-off from Runway 07, climbing to 4,000 feet. The crew proceeded north-west, then requested to turn back. The approach was stable, with flap selection discussed. The final flap position (100%) is typically selected during flare or after touchdown.

Investigation Findings

Examination revealed that the aircraft made a gentle touchdown near the PAPI, left of the centreline. Initial contact was on both inboard propeller tips, followed by outboard propellers, radio aerials, fuselage undersurface, inboard flaps, and the No. 3 engine nacelle. The aircraft slid 480 metres, coming to rest on Runway 07. Damage included severe bending and scraping of all propeller blades, abrasion of the fuselage and No. 3 engine cowl, and distortion of inboard flaps. A small amount of fuel was released from the No. 3 engine nacelle; no fire occurred. The flaps were fully deployed (100%, 47°) at touchdown, and the flap lever was at 47°. All three landing gear legs were fully retracted at touchdown and during the slide. After lifting, the gear deployed normally using the emergency procedure. The landing gear selector was found with the 'Down' button pushed in, but the electric actuator switched by the selector was in the fully up position. The actuator had not been disturbed during recovery. The landing gear indicator was set to 'Day' (bright). Testing of relevant systems (except hydraulic generation) showed normal operation.

Probable cause

Subsequent runway and aircraft examination showed that G-OPFE had made a gentle touchdown on Runway 07 close to the PAPI position, somewhat left of the centreline. Initial contact was on both inboard propeller tips. After a few metres, both outboard propellers contacted the runway, progressively followed by radio aerials mounted beneath the fuselage, the fuselage undersurface, the inboard part of both inboard flaps and the No 3 engine nacelle. The aircraft continued down the left side of the runway, across the intersecting Runway 17/35, and came to rest on Runway 07 after a ground slide of approximately 480 metres. Damage consisted of severe bending and scraping of all propeller blades, abrasion of much of the undersurface of the fuselage and the No 3 engine nacelle lower cowl, and abrasion and moderate distortion of the inboard flaps A very small quantity of fuel was reportedly released from the No 3 engine nacelle. There was no fire. Examination showed that the flaps had been in the fully deployed position (100%, 47°) at touchdown and the flap lever was found selected at 47°. All three landing gear legs had been fully retracted at touchdown and throughout the ground slide. After the aircraft had been lifted, the three legs deployed into downlock without difficulty using the emergency lowering procedure. The landing gear selector was found with the 'Down' button pushed in, but the electric actuator that is switched by the selector was found in the fully up position; this actuator had not been disturbed during recovery operations. The landing gear indicator was found in the 'Day' (ie bright) setting. Examination and testing of relevant systems was carried out, except for the hydraulic generation system; this indicated that the landing gear operating and indication systems functioned normally.