ASN Wikibase Occurrence # 160055
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: | Friday 30 August 2013 |
| Time: | 20:10 LT |
| Type: |  McDonnell Douglas MD-11F |
| Owner/operator: | Martinair Holland |
| Registration: | PH-MCW |
| MSN: | 48788/632 |
| Year of manufacture: | 1998 |
| Engine model: | Pratt & Whitney PW4462-3 |
| Fatalities: | Fatalities: 0 / Occupants: |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Aguadilla-Borinquen Airport (BQN/TJBQ) -
 Puerto Rico
|
| Phase: | Take off |
| Nature: | Cargo |
| Departure airport: | Aguadilla-Rafael Hernández Airport (BQN/TJBQ) |
| London-Stansted Airport (STN/EGSS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Four LPT stage 4 (S4) vane clusters weakened by an undetected sulfidation/corrosion attack disengaged at their inner attachment. The disengaged clusters displaced aft and contacted the S4 blades during operation. The contact machined a groove into the blade leading edges near the platforms. High cycle fatigue cracks initiating in the machined area of several blades propagated to overload separation. The blade liberation led to the separation of the remaining S4 blades and extensive downstream LPT blade and vane cluster damage. A large amount of metal debris was released into the gas path, loading the engine casings. The P-flange attachment hardware separated in overload, resulting in engine uncontainment.
Probable Cause: an insufficiently robust flange attachment hardware design, which failed to contain engine components that were liberated during an LPT mechanical failure, resulting in engine/nacelle uncontainment.
A factor in the incident was the lack of a module-level LPT inspection and the lack of an inspection requirement to detect/monitor the LPT S4 for advanced sulfidation attack.
Accident investigation:
 |
|
Sources:
NTSB ENG13IA036
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Sep-2013 17:09 | harro | Added |
| 04-Sep-2013 17:10 | harro | Updated [Source] |
| 18-May-2016 19:18 | harro | Updated [Source, Narrative] |
| 29-Nov-2017 12:13 | ASN Update Bot | Updated [Time, Cn, Operator, Other fatalities, Departure airport, Destination airport, Source, Damage, Narrative] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation