Event Details

Title:Uncertain landing gear on approach, Fokker F28 Mark 0100, G-BXWE
Micro summary:This Fokker F28 Mark 0100 had an ambiguous "down and locked" indicator when approaching.
Event Time:2004-08-14 at 1940 UTC
File Name:2004-08-14-UK.pdf
Publishing Agency:Aircraft Accident Investigation Board (AAIB)
Publishing Country:United Kingdom
Report number:EW/C2004/08/01
Site of event:Approach
Departure:National Airport, Brussels, Belgium
Destination:London Heathrow Airport, London, England
Airplane Type(s):Fokker F-28 Mark 0100
Flight Phase:Approach
Operator(s):BMI British Midland Airways
Type of flight:Revenue
Serious Injuries:0
Other Injuries:0
Executive Summary:The aircraft was on a scheduled passenger flight from Brussels to London Heathrow. When the landing gear was selected down on final approach to London Heathrow the nose landing gear 'down and locked' green light failed to illuminate. This was accompanied by landing gear unsafe visual and double-chime aural warnings.

After recycling the landing gear, consulting with company engineers and carrying out the prescribed procedure for alternate landing gear lowering, the crew were committed to landing the aircraft with a nose landing gear unsafe indication. The aircraft landed with out incident; the nose landing gear indicated safe during the landing roll.

Subsequent engineering investigations revealed that the Aircraft Maintenance Manual (AMM) procedure for checking the nose landing gear downlock plunger clearance was ambiguous, in that it did not make it clear that it is necessary to apply a rearward force on the nose landing gear when checking the downlock plunger clearance. It is believed that this caused the nosed landing gear downlock to be misrigged. In response to the airline's recommendation, the aircraft manufacturer has agreed to amend the AMM procedure.
Learning Keywords:Operations - Checklists/Procedures
Systems - Landing Gear
Close match:Wheels-up Landing, Continental Airlines Flight 1943, Douglas DC-9, N10556, Houston, Texas February 19, 1996
Runway excursion, Royal Air Maroc Boeing 747-200 CN-RME, Dorval/Montreal International Airport, uebec, 23 July 2000


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