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ASN Wikibase Occurrence # 263149
Last updated: 18 October 2021
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Date:28-DEC-2018
Time:11:38 LT
Type:Silhouette image of generic LJ31 model; specific model in this crash may look slightly different
Learjet 31A
Owner/operator:private
Registration: D-CAMB
MSN: 31-155
Fatalities:Fatalities: 0 / Occupants: 4
Other fatalities:0
Aircraft damage: None
Category:Serious incident
Location:north of Faro -   Portugal
Phase: En route
Nature:Ferry/positioning
Departure airport:London-Biggin Hill Airport (BQH/EGKB)
Destination airport:Faro Airport (FAO/LPFR)
Investigating agency: BFU Germany
Narrative:
The Learjet 31A corporate jet took off at 10:22 UTC at London Biggin Hill Airport, United Kingdom. Airport of destination was Faro, Portugal. It was a positioning flight without passengers conducted under instrument flight rules. The Pilot in Command (PIC) occupied the left-hand seat and was pilot flying. The co-pilot occupied the right-hand seat and was pilot monitoring. Two employees of the company were seated in the cabin.
After about one hour of flight time, at 11:30 hrs, the aircraft was in Portuguese airspace. During descent, the PIC asked the co-pilot if he agreed to fly a roll about the longitudinal axis of the aircraft.
The co-pilot provided the BFU with a written statement that he did not agree to such a flight manoeuvre and had told the PIC so. According to the co-pilot’s statement and the FDR data, the PIC had disengaged the autopilot at 11:36:50 hrs at about 13,200 ft Pressure Altitude (PA) and flown the airplane manually.
At 11:37:10 hrs, at about 11,500 ft PA, two steep turns with a bank angle of about 140° each were flown left and right. At 11:38:15 hrs, the PIC conducted the roll about the longitudinal axis of the airplane, also at about 11,500 ft PA levelling-off occurred 10 s later.
The flight manoeuvre was initiated with 301 kt IAS. During the roll, airspeed decreased continuously. Levelling-off occurred with 251 kt IAS. During the initiation of the flight manoeuvre a maximum load factor of +2.47 g occurred, which decreased continuously to +1.00 g.
During the flight no one was injured. At 11:49 hrs, landing occurred at Faro Airport, Portugal.

In May 2019, the operator charged another company with the routine read-out of the FDR data as part of the Flight Data Monitoring (FDM). After the read-out, the flight manoeuvre was identified due to the exceptionally high roll angle data. On 4 June 2019, the operator reported the occurrence with the BFU.

Sources:

https://www.bfu-web.de/EN/Publications/Investigation%20Report/2018/FReport_18-1808-6X_Learjet_Faro.pdf?__blob=publicationFile


Images:

Photo of D-CAMB courtesy AirHistory.net


Helsinki - Vantaa (EFHK / HEL)
23 March 2018; (c) Pertti Sipilä


BFU

Revision history:

Date/timeContributorUpdates
27-May-2021 18:26 harro Added
27-May-2021 18:36 harro Updated [Photo]
28-May-2021 07:59 Anon. Updated [Narrative]

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