Cessna 680 Citation Sovereign, G-CJCC, 30 September 2010

Cessna 680 Citation Sovereign, G-CJCC, 30 September 2010, during climb after departure from London Luton Airport.

• From: Air Accidents Investigation Branch
• Published: 10 December 2014

• Category: Commercial - fixed wing
• Report type: Bulletin - Field investigation
• Date of occurrence: 30 September 2010
• Aircraft type: Cessna 680 Citation Sovereign
• Location: During climb after departure from London Luton Airport
• Registration: G-CJCC

Cessna 680 Citation Sovereign, G-CJCC

Summary:

The crew experienced an uncommanded transfer of fuel from the right to the left fuel tank after following the checklist procedures for a left main electrical bus fault indication. The aircraft subsequently became left wing heavy and exceeded the lateral imbalance limits. It returned to Luton Airport where a flapless landing was completed without further incident. As a result of this incident, Special Bulletin S1/2010 was published on 8 October 2010, containing two Safety Recommendations. The investigation established that the isolation of the left main bus had caused a false fuel cross-feed command which resulted in the uncommanded fuel transfer. The aircraft manufacturer has published a temporary flight crew procedure to mitigate the effects of a recurrence and has also issued a service bulletin to incorporate a design solution. Eight further Safety Recommendations are made in this bulletin, relating to aircraft certification processes and flight recorder documentation.

Download report:

Cessna 680 Citation Sovereign, G-CJCC 08-11.pdf (447.86 kb)

Safety Recommendation Document:

G-CJCC Safety Recommendation Document

Published 10 December 2014