Bukovyna MD88 near Mashad on Jul 24th 2012, cabin pressure problems

Last Update: August 20, 2012 / 21:30:13 GMT/Zulu time

Bookmark this article
Incident Facts

Date of incident
Jul 24, 2012

Classification
Incident

Cause
Cabin pressure problems

Flight number
HH-6261

Departure
Mashad, Iran

Destination
Kish Island, Iran

Aircraft Registration
UR-CIX

Aircraft Type
McDonnell Douglas MD-88

ICAO Type Designator
MD88

A Bukovyna McDonnell Douglas MD-88 on behalf of Taban Air, registration UR-CIX performing flight HH-6261 from Mashad to Kish Island (Iran), was climbing through FL220 out of Mashad when the crew observed the cabin altitude climb through 8000 feet. Although both air conditioning systems showed no malfunction the cabin altitude continued to climb at 200 feet per minute. At FL270 the commander stopped the climb and decided to return to Mashad. During the descent, at about FL190, the cabin pressure returned to normal. At FL160 the commander decided to stop the descent and continue the flight. While climbing through FL270 the cabin altitude again climbed through 8000 feet prompting the captain to decide to return to Mashad, where the aircraft landed safely.

Ukraine's Ministry of Transport reported in their monthly bulletin that maintenance found a defective flow control valve, a faulty pressure regulator and clogged filters of both left and right hand air conditioning systems. The filters and the faulty devices were replaced. The investigation commission analysed that the faults were caused by a manufacturing fault, the manufacturer disagreeing with that finding. The commission thus stated in their conclusions that the reasons for the failure of the devices could not be established.
Incident Facts

Date of incident
Jul 24, 2012

Classification
Incident

Cause
Cabin pressure problems

Flight number
HH-6261

Departure
Mashad, Iran

Destination
Kish Island, Iran

Aircraft Registration
UR-CIX

Aircraft Type
McDonnell Douglas MD-88

ICAO Type Designator
MD88

This article is published under license from Avherald.com. © of text by Avherald.com.
Article source

You can read 2 more free articles without a subscription.

Subscribe now and continue reading without any limits!

Subscribe now
Are you a subscriber? Login
Subscribe

Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.

Compare our plans

Send tip

Support AeroInside by sending a small tip amount.

Send tip

Related articles

Newest articles

Subscribe today

Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.

Pick your plan and subscribe

Partner

Blockaviation logo

A new way to document and demonstrate airworthiness compliance and aircraft value. Find out more.

ELITE Logo

ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.

Blue Altitude Logo

Your regulation partner, specialists in aviation safety and compliance; providing training, auditing, and consultancy services. Find out more.

AeroInside Blog
Popular aircraft
Airbus A320
Boeing 737-800
Boeing 737-800 MAX
Popular airlines
American Airlines
United
Delta
Air Canada
Lufthansa
British Airways