Accident Piel CP-301B Emeraude G-AZGY, Saturday 16 April 2016
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Date:Saturday 16 April 2016
Type:Silhouette image of generic CP30 model; specific model in this crash may look slightly different    
Piel CP-301B Emeraude
Registration: G-AZGY
MSN: 122
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Location:RAF Henlow, Bedfordshire -   United Kingdom
Phase: Taxi
Departure airport:RAF Henlow, Bedfordshire
Destination airport:
Investigating agency: AAIB
Confidence Rating: Accident investigation report completed and information captured
AAIB investigation to Piel CP-301B Emeraude, G-AZGY; Substantially damaged when left landing gear collapsed, RAF Henlow, Bedfordshire, 16 April 2016. The incident was the subject of an AAIB Investigation, and the following is the summary from the AAIB Report

"While taxiing from the hangar at RAF Henlow, shortly after the aircraft moved from the paved surface onto the grass taxiway, the pilot described hearing a “loud pop”. On preparing to stop the aircraft he heard another loud pop and the left wing slowly sank to the ground, as the left landing gear leg folded forwards under the wing.

The pilot was uninjured and exited the aircraft without assistance. The aircraft was subsequently recovered to the hangar for further examination.

Subsequent examination revealed that the landing gear leg had failed as a result of a thread failure on one of the landing gear attachment bolts. The pilot considered that the poor construction of the bolt was the primary cause of the failure".

=Damage sustained to airframe=
Per the above AAIB report "Left landing gear, wing skin and propeller" were damaged. The left-wing skin was damaged near the landing gear attachment point and one of the wooden propeller blades broke at the tip as it contacted the ground. The pilot considered that a large compression spring, which forms part of the landing gear, allowed the wing to fall slowly to the ground when the landing gear collapsed, minimising damage to the aircraft. The aircraft was repaired and returned to service

Accident investigation:
Investigating agency: AAIB
Report number: 
Status: Investigation completed
Download report: Final report


1. AAIB Final Report:

History of this aircraft

This Piel CP301B Emeraude was built in 1968, and was first registered in France as F-BRAA. It was first registered in the UK as G-AZGY on 12 October 1971, Between October 1971 and November 2004, G-AZGY passed through the hands of eight UK-registered owners. As at 31 July 2020, G-AZGY had accumulated a total of 3,248 flying hours on the airframe.



Piel CP-301B Emeraude G-AZGY, (c/no.122, built 1968) at Woburn Deer Park, Bedfordshire, UK, 15 August 2015: Piel CP-301B Emeraude

Revision history:

04-May-2024 11:28 Dr. John Smith Added
04-May-2024 11:28 ASN Updated [Accident report]

Corrections or additions? ... Edit this accident description

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