AAIB investigation to Sikorsky S-92A, G-CHHF

Nose landing gear failed to lower on approach to Scatsta Airport, Shetland, 29 January 2018.

• From: Air Accidents Investigation Branch
• Published: 9 August 2018

• Category: Commercial - rotorcraft
• Report type: Bulletin - Correspondence investigation
• Date of occurrence: 29 January 2018
• Aircraft type: Sikorsky S-92A
• Location: On approach to Scatsta Airport, Shetland
• Registration: G-CHHF

Summary:

During a final approach to land at Scatsta the nose landing gear (NLG) failed to extend despite being recycled and the use of the emergency blowdown system. The crew declared a PAN and the decision was taken for ground crew to lever the NLG down manually. This was successfully carried out and the helicopter landed safely. It was found that the automatic nosewheel self-centring mechanism had not operated, causing the nosewheels to jam the nose leg in its bay. The exact cause of the failure of the NLG to centre the nosewheels could not be determined. The operator has taken three safety actions.

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Sikorsky S-92A, G-CHHF 08-18

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Published 9 August 2018