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Last updated: 13 November 2018
Status:Schlussbericht
Datum:Mittwoch 21 Oktober 2009
Zeit:15:31
Flugzeugtyp:Silhouette image of generic B703 model; specific model in this crash may look slightly different
Boeing 707-330C
Betrieben durch:Sudan Airways
Gemietet von :AZZA Transport
Kennzeichen: ST-AKW
Werknummer: 20123/788
Baujahr: 1969
Betriebsstunden:77484
Anzahl Zyklen der Zelle:26888
Triebwerk: 4 Pratt & Whitney JT3D-3B
Besatzung:Todesopfer: 3 / Insassen: 3
Fluggäste:Todesopfer: 3 / Insassen: 3
Gesamt:Todesopfer: 6 / Insassen: 6
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:1,6 km (1 Meilen) NW of Sharjah Airport (SHJ) (   Vereinigte Arabische Emirate)
Flugphase: Anfangssteigflug (ICL)
Betriebsart:Frachtflug
Flug von:Sharjah Airport (SHJ/OMSJ), Vereinigte Arabische Emirate
Flug nach:Khartoum-Civil Airport (KRT/HSSS), Sudan
Flugnummer:2241
Unfallbericht:
A Boeing 707 cargo plane, owned by Azza Transport, was destroyed when it crashed in a desert area immediately after takeoff from Sharjah Airport (SHJ). The airplane operated on Sudan Airways flight SUD2241 and was carrying air conditioning units, auto parts, computers and personal effects. The flight took off from runway 30 at 15:29. During initial climb, the core cowls of engine no. 4 separated and fell on the runway.

The aircraft continued in a shallow climb with level wings when the pilot informed the ATC that he lost engine no.4. He assumed this because the no. 4 Engine Pressure Ratio (EPR) manifold flex line had ruptured, leading to erroneous reading on the EPR indicator. The crew interpreted the EPR reading as a failure of no. 4 engine; accordingly they declared engine loss and requested the tower to return to the airport.
The aircraft went into a right turn, banked and continuously rolled to the right at a high rate, sunk, and impacted the ground with an approximately 90° right wing down attitude.

Probable Cause:

CAUSES:
(a) the departure of the No. 4 engine core cowls;
(b) the consequent disconnection of No. 4 engine EPR Pt7 flex line;
(c) the probable inappropriate crew response to the perceived No. 4 engine power loss;
(d) the Aircraft entering into a stall after the published maximum bank angle was exceeded; and
(e) the Aircraft Loss of Control ("LOC") that was not recoverable.

Contributing Factors to the Accident were:
(a) the Aircraft was not properly maintained in accordance with the Structure Repair Manual where the cowls had gone through multiple skin repairs that were not up to aviation standards;
(b) the Operator's maintenance system failure to correctly address the issues relating to the No. 4 engine cowls failure to latch issues;
(c) the failure of the inspection and maintenance systems of the maintenance organization, which performed the last C-Check, to address, and appropriately report,
the damage of the No. 4 engine cowls latches prior to issuing a Certificate of Release to Service;
(d) the Operator's failure to provide a reporting system by which line maintenance personnel report maintenance deficiencies and receive timely and appropriate guidance and correction actions;
(e) the Operator's quality system failure to adequately inspect and then allow repairs that were of poor quality or were incorrectly performed to continue to remain on the Aircraft; and
(f) the SCAA safety oversight system deficiency to adequately identify the Operator's chronic maintenance, operations and quality management deficiencies.

Accident investigation:
cover
Investigating agency: GCAA UAE
Status: Investigation completed
Duration: 3 years and 5 months
Accident number: 10/2009
Download report: Final report

Informationsquelle:
» UAE General Civil Aviation Authority (GCAA)


Sicherheitsempfehlungen
AZZA Transport was temporarily banned by the UAE General Civil Aviation Authority (GCAA) as of October 25, 2009. This was considered a preventive measure until investigations into the cause of the accident are completed.

GCAA issued 9 Safety Recommendations

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photo of Boeing 707-330C ST-AKW
photo of Boeing 707-330C ST-AKW
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Sharjah Airport to Khartoum-Civil Airport as the crow flies is 2604 km (1628 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Boeing 707

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  • 171st loss
  • 75th Fataler Unfall
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 Vereinigte Arabische Emirate
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