ASN Wikibase Occurrence # 219580
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| Date: | Sunday 25 November 2018 |
| Time: | 03:45 UTC |
| Type: |  Airbus A320-231 |
| Owner/operator: | Iranair Tours Co. |
| Registration: | EP-TTA |
| MSN: | 393 |
| Year of manufacture: | 1992 |
| Engine model: | IAEV2500-A1 |
| Fatalities: | Fatalities: 0 / Occupants: 165 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | NE of Ahwaz -
 Iran
|
| Phase: | En route |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | Tehran-Mehrabad Airport (THR/OIII) |
| Ahwaz Airport (AWZ/OIAW) | |
| Investigating agency: | AAIB Iran |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
At FL340 the cabin pressure dropped. All persons on board used oxygen masks as the aircraft made an emergency descent to FL140. A safe landing was carried out at 04:24 UTC.
The aircraft was ferried back to Tehran at FL250 later that day and re-entered service on November 27.
CONCLUSION:
Some facts and findings observed on the incident scenario which help to conclusion of the incident as:
- The aircraft was operated based on MEL but technical failure of Air bleed #2 caused supporting low quantity of demanded air for both pack system and wing anti-ice system.
- The crew did not follow the procedures descripted in OEB 40.01 and MEL timely. Including Approach climb performance penalty of 2400 kg as per MEL Flight Preparation/ Limitation.
- Flight crew made several mistakes in normal flying procedures (MTOW calculation, SID, LVL OFF & approach).
- Flight crew did not follow emergency descend procedure as per AIRBUS & AIP instructions & procedures.
Accident investigation:
 |
|
Sources:
https://www.bea.aero/en/investigation-reports/notified-events/detail/event/incident-grave-de-lairbus-a320-immatricule-ep-tta-et-exploite-par-iranair-tours-survenu-le-251120/
https://www.flightradar24.com/data/aircraft/ep-tta#1ea98ded
https://www.cao.ir/web/english/investigation-reports?p_p_id=NetFormGetFile_WAR_NetForm&p_p_lifecycle=2&p_p_resource_id=getFile&_NetFormGetFile_WAR_NetForm_file=cTVoNHNhNGM5eHRtUyt2UmNmTStDWjVCQXZKSzl2RGtZVlBDNnVFV0d2ejJaZnczNVZJTEVRcndlOXJBOEdJRTloT2R2L3h4NUNZcwpIOUZjR2NwS3pRPT0=.pdf
History of this aircraft
Other occurrences involving this aircraft
| 13 August 2016 | EP-TTA | Atrak Air | 0 | Tehran-Mehrabad Airport (THR/OIII) | |
min |
| Runway excursion | ||||||
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Dec-2018 14:42 | harro | Added |
| 30-May-2020 06:54 | KagurazakaHanayo | Updated [Total occupants, Departure airport, Destination airport, Source, Narrative] |
Corrections or additions? ... Edit this accident description
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