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ASN Wikibase Occurrence # 234511
Last updated: 6 May 2021
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Time:21:37 LT
Type:Silhouette image of generic A319 model; specific model in this crash may look slightly different
Airbus A319-132
Registration: 9V-TRB
MSN: 3801
Fatalities:Fatalities: 0 / Occupants:
Other fatalities:0
Aircraft damage: None
Location:near Singapore -   Singapore
Phase: En route
Nature:Passenger - Scheduled
Departure airport:Angeles City-Diosdado Macapagal International Airport (CRK/RPLC)
Destination airport:Singapore-Changi International Airport (SIN/WSSS)
Investigating agency: TSIB Singapore
An Airbus A319 experienced a slow increase in cabin altitude while descending through FL290. The flight crew performed an emergency descent to 9,000 feet. Subsequently, the aircraft landed in Singapore Changi Airport.
There were no injuries to any persons and no damage to the aircraft. During the occurrence, PAN-PAN was declared and flight crew oxygen system was used.

1. The likely cause of the excessive cabin altitude was a corruption of LFE in the CPC. The CPC manufacturer believed that the corruption arose from a fatigue solder joint on the CPC circuit board.
2. There had been past occurrences of excessive cabin altitude that were caused by a corruption of LFE value in the CPC, of which one was determined to have likely been caused by a fatigue solder joint, similar to this occurrence.



Accident investigation:
Investigating agency: TSIB Singapore
Status: Investigation completed
Duration: 9 months
Download report: Final report


Photo of 9V-TRB courtesy

Singapore - Changi (WSSS / SIN)
1 February 2019; (c) Anton Homma

Revision history:

29-Mar-2020 16:52 harro Added

Corrections or additions? ... Edit this accident description