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ASN Wikibase Occurrence # 193584
Last updated: 20 January 2022
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Time:11:00 LT
Type:Silhouette image of generic YK52 model; specific model in this crash may look slightly different
Yakovlev Yak-52
Registration: G-CBSS
MSN: 833707
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Between Dailly and Baileux (near Couvin) -   Belgium
Phase: En route
Departure airport:Cerfontaine Airport (EBCF)
Destination airport:Cerfontaine Airport (EBCF)
Investigating agency: AAIU Belgium
After a short flight starting from the airfield of Cerfontaine (EBCF), the engine suddenly began to sputter and lost power. The pilot determined he could not fly back to the airfield and decided to land the plane where he could. Just before landing, the aeroplane hit the top of a tree, pitch nosed down and violently hit the ground.

Direct cause:
The collision of the aeroplane with the top of a tree when performing a forced landing caused by a significant loss of engine power.

Indirect cause:
- The engine loss of power was most probably caused by the internal corrosion of the carburettor which partially blocked the fuel flow at the pressure regulator valve. The corrosion of the magnesium alloy casing of the carburettor was likely caused by water contamination.
- The limited height above ground level when the engine loss power occurred and the limited maximum lift to drag ratio did not leave the pilot much time to prepare the landing.

Contributing factors:
- The schedule used for the last maintenance dated June 2016 did not require the cleaning of the fine fuel filter.

U.K. Mandatory Permit Directive (MPD) Vedenyev M-14P, Ivchenko AI-14, Zhuzhou HS-6: Engine Fuel System- Inspection and Draining (Sept. 2018):

Accident investigation:
Investigating agency: AAIU Belgium
Status: Investigation completed
Duration: 1 year and 4 months
Download report: Final report


Photo of G-CBSS courtesy

In Flight
18 August 2012; (c) Robbie Shaw

G-CBSS at Zoersel Airfield, 18 August 2012 (photo: H.Ranter/ASN)

Revision history:

14-Feb-2017 14:13 Iceman 29 Added
14-Feb-2017 16:09 Geno Updated [Cn, Phase, Departure airport, Source, Damage]
14-Feb-2017 16:39 Anon. Updated [Location]
14-Feb-2017 16:41 harro Updated [Aircraft type, Photo, ]
14-Feb-2017 16:48 harro Updated [Cn, Phase, Departure airport]
14-Feb-2017 16:50 JINX Updated [Aircraft type, Phase, Departure airport, Source]
14-Feb-2017 16:53 harro Updated [Phase, Departure airport, Source]
16-Feb-2017 13:35 sundevil Updated [Location, Damage, Narrative]
27-Jun-2018 08:26 harro Updated [Phase, Destination airport, Narrative]
14-Sep-2018 14:44 harro Updated [Aircraft type, Source]

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