ASN logo
ASN Wikibase Occurrence # 232463
Last updated: 26 January 2020
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.

Date:28-JAN-2019
Time:08:15 LT
Type:Silhouette image of generic A359 model; specific model in this crash may look slightly different
Airbus A350-941
Owner/operator:Singapore Airlines
Registration: 9V-SMS
C/n / msn: 158
Fatalities:Fatalities: 0 / Occupants:
Other fatalities:0
Aircraft damage: Minor
Category:Incident
Location:Singapore Changi Airport -   Singapore
Phase: Standing
Nature:-
Departure airport:-
Destination airport:-
Investigating agency: TSIB Singapore
Narrative:
While unloading food carts from the aircraft, a catering truck damaged the aft-most door on the right side of the aircraft, the door hinge and the door frame.

Conclusions:
1 The catering truck had a higher-than-normal engine idle RPM. This resulted in excessive hydraulic pressure that led to the hydraulic scissor lift moving in a way that lowered the cabin platform.
2 The optimal engine idle speed of 900RPM desired by the truck manufacturer was not made known to the truck operator.
3 The rear control panel was not meant for raising the cabin platform during catering operation to aircraft.
4 In the existing design of the truck cabin safety system, any command from the cabin control panels (front or rear) would override the safety shoe’s safety mechanism to automatically cause a lowering of the cabin platform.

Sources:

TSIB

Accident investigation:
cover
  
Investigating agency: TSIB Singapore
Status: Investigation completed
Duration: 12 months
Download report: Final report


Images:

Photo of 9V-SMS courtesy AirHistory.net


Manchester - International (EGCC / MAN)
16 October 2019; (c) Terry Fletcher

Revision history:

Date/timeContributorUpdates
26-Jan-2020 17:27 harro Added

Corrections or additions? ... Edit this accident description