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ASN Wikibase Occurrence # 249444
Last updated: 20 November 2021
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Type:Silhouette image of generic B734 model; specific model in this crash may look slightly different
Boeing 737-4S3
Registration: ZS-OAF
MSN: 25116/2061
Fatalities:Fatalities: 0 / Occupants:
Other fatalities:0
Aircraft damage: Unknown
Location:near George -   South Africa
Phase: En route
Nature:Passenger - Scheduled
Departure airport:Cape Town International Airport (CPT/FACT)
Destination airport:East London Airport (ELS/FAEL)
Investigating agency: CAA SouthAfrica
The crew of ZS-OAF was preparing to taxi for take-off from Cape Town International Airport to East London Airport. Before taxi, one of the crew members reported that she thought that doors number 1R and 2R ware not closed properly. The doors were disarmed, and technicians were asked to check if the doors were closed from outside. The doors were opened and closed 3 times before it could be confirmed that they were closed properly. The technicians confirmed that both doors looked closed from the outside.
The aircraft routed via VORs. GRV, PEV, ELV. When the aircraft was passing 32500 feet (ft), there was a cabin altitude warning and the cabin altitude was at 10 000 ft. Cabin climbing was at approximately 700 ft per minute. The crew commenced with memory item and decided to not deploy masks to avoid causing panic because the nature of the leak was slow. Maximum cabin was approximately 12 500 ft. The out-flow valve was fully closed already when they went to manual mode during memory items. During decent, the low idle light illuminated.
The pilot added a little bit of thrust to extinguish the light and then descended to 10000ft and assessed the situation. A very loud noise was heard from 1 of the left doors and the crew descended to 8 000 ft at GRV, in a hold. The pilot broadcasted a mayday call and commenced the approach. The aircraft landed safely in George.
Fire trucks and medical personnel were on standby but were not used. Cabin crew confirmed no one required medical assistance. There were 3 pax with nose bleeds and 5 with ear pain. After landing, the crew noticed a very high cabin pressure. The crew closed and slowly opened the out-flow valve to release pressure




Photo of ZS-OAF courtesy

Johannesburg - OR Tambo International (FAOR / JNB)
27 February 2020; (c) LRS747

Revision history:

04-Apr-2021 19:29 harro Added

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