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ASN Wikibase Occurrence # 249177
Last updated: 28 August 2021
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Date:18-MAY-2019
Time:11:30 UTC
Type:Silhouette image of generic B734 model; specific model in this crash may look slightly different
Boeing 737-4B7
Owner/operator:YanAir
Registration: UR-CQX
MSN: 24558/1845
Fatalities:Fatalities: 0 / Occupants: 168
Other fatalities:0
Aircraft damage: None
Category:Serious incident
Location:near Kolomyya -   Ukraine
Phase: En route
Nature:Passenger - Scheduled
Departure airport:Antalya Airport (AYT/LTAI)
Destination airport:Lviv-Danylo Halytskyi International Airport (LWO/UKLL)
Investigating agency: NBAAI Ukraine
Narrative:
YanAir flight BKV2170, a Boeing 737-400 was en route between Antalya (Turkey) and Lviv (Ukraine) when the cabin pressure decreased. At that time the aircraft was descending through FL300.
The vertical rate of descent of the aircraft was 2500 - 2700 ft / min. The performed an emergency descent to flight level FL 120, while declaring an emergency. The oxygen masks were released in the passenger cabin.
The plane landed safely at Lviv Airport.

Reasons
The cause of a serious incident with a Boeing 737-400, registration number UR-CQX, operating flight BKV 2170 on the route Antalya (Turkey) - Lviv (Ukraine), was a leak in the left emergency hatch due to loss of elasticity and damage to the seal of the emergency hatch.
Event category: SCF-NP (failure or malfunction of systems / components, except power plant)

Sources:

NBAAI

Accident investigation:
cover
  
Investigating agency: NBAAI Ukraine
Status: Investigation completed
Duration: 1 year and 10 months
Download report: Final report


Images:

Photo of UR-CQX courtesy AirHistory.net


Istanbul - Atatürk (LTBA / IST)
1 April 2019; (c) Danny Grew

Revision history:

Date/timeContributorUpdates
27-Mar-2021 11:58 harro Added
27-Mar-2021 12:03 harro Updated [Time, Total occupants, Location, Narrative]

Corrections or additions? ... Edit this accident description