Juba AN12 at Khartoum on Nov 8th 2007, engine failure, runway excursion, aircraft burned down
Last Update: May 19, 2013 / 21:33:39 GMT/Zulu time
Incident Facts
Date of incident
Nov 8, 2007
Classification
Report
Cause
Runway excursion
Airline
Jubba Airways
Departure
Khartoum, Sudan
Destination
Juba, Sudan
Aircraft Registration
ST-JUA
Aircraft Type
Antonov An-12
ICAO Type Designator
AN12
Post flight examination revealed no evidence of a bird strike though the operator continued to claim a bird strike had caused the accident, observers at the runway thresholds 18 and 36 reported no bird activity around the aerodrome at the time of the accident.
Sudan's Central Directorate of Air Accident Investigation (SAAICD) released their final report concluding the probable causes of the accident were:
- Crew panic and misjudgement lead to failure of applying procedures for landing with one-engine inoperative.
- No.3 engine failure
The captain (54, ATPL, 17,000 hours total, 7,000 hours on type) was assisted by a first officer (59, 11,000 hours total, 4,200 hours on type). The aircraft had accumulated 11,787 hours since new and 3,687 hours since last overhaul and was within maintenance schedules.
The weather at departure was winds calm and CAVOK.
Both flight data recorders were recovered following the accident, both had been exposed to fire, but the tapes inside were good. However, neither tape contained data of the accident flight.
The SAAICD analysed that there was no evidence of a bird strike like blood/feather at the engine intake or damage at the first stages of the compressor (editorial note: no further analysis or report of examination results are contained in the report that would explain why the engine failed). The propeller #3 feathered as result of the malfunction.
Following a teardrop procedure the aircraft returned to Khartoum for a landing on runway 36, the approach speed was kept at 280-290 kph (151-156 knots) with flaps at 25 degrees. The aircraft touched down about 1500 meters down the 2980 meters long runway, the aircraft veered vigorously left because symmetric propeller #2 had entered beta range with propeller #3 feathered. This was contrary to standard operating procedures demanding the symmetric engine kept at idle. Brakes were not applied, the commander admitted due to panic, nose wheel steering was not activated. The SAAICD concluded analysis stating that the crew did not execute the landing checklist and did not take sufficient time to assess the situation and make good decisions.
5 safety recommendations were released as result of the investigation.
Incident Facts
Date of incident
Nov 8, 2007
Classification
Report
Cause
Runway excursion
Airline
Jubba Airways
Departure
Khartoum, Sudan
Destination
Juba, Sudan
Aircraft Registration
ST-JUA
Aircraft Type
Antonov An-12
ICAO Type Designator
AN12
This article is published under license from Avherald.com. © of text by Avherald.com.
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