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Date: | Sunday 1 February 2015 |
Time: | 07:51 LT |
Type: | Canadair CL-600-2E25 Regional Jet CRJ-1000 |
Owner/operator: | Air Nostrum |
Registration: | EC-LPG |
MSN: | 19021 |
Year of manufacture: | 2011 |
Fatalities: | Fatalities: 0 / Occupants: 67 |
Other fatalities: | 0 |
Aircraft damage: | Minor |
Category: | Serious incident |
Location: | Madrid-Barajas Adolfo Suárez Airport (MAD/LEMD) -
Spain
|
Phase: | Landing |
Nature: | Passenger - Scheduled |
Departure airport: | Pamplona Airport (PNA/LEPP) |
Destination airport: | Madrid-Barajas Airport (MAD/LEMD) |
Investigating agency: | CIAIAC |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The aircraft took off at 07:13 from the Pamplona Airport (LEPP), Spain, after spending the night there. It has been snowing all night and it was still snowing intermittently. The snow plows had been working to clear the runway. The aircraft was deiced and it taxied on the apron, which had standing slush. The aircraft later took off normally from the runway in use, 33, which also had slush on it. The flight was uneventful but upon landing at the destination airport, the crew felt vibrations coming from the main gear, which they identified as a blowout. They reported this to ATC and requested a nearby parking stand. Once there, the crew confirmed that the tire on the outboard left wheel (no. 1) had burst, there was a flat spot on the outboard right tire (no. 4) and there was white ice on the main gear wheels. Debris from a tire and from the gear door, as well as several pieces of white ice, were found on the runway where the aircraft had touched down. The occupants were not injured and they were disembarked normally.
The investigation considered the aspects related to the operation of the aircraft, the procedures put in place by both the manufacturer and the operator for operating in contaminated runway conditions, and the airport’s procedures to clean runways and measure parameters such as contaminant depth and the coefficient of friction.
It was considered that the main cause of the incident is that part of the slush encountered during the aircraft’s taxiing and subsequent takeoff run could have entered the landing gear bays and adhered to the components there. When the gear was retracted, tires number 1 and 4 were in the lowest position and were thus more exposed to the low temperatures present during the flight. As a result, any slush present could have fallen due to gravity to the brake assembly and then frozen.
The following contributed to the incident:
- The improper cleaning of the runways at the Pamplona Airport which resulted in the presence of slush on the apron and cordons of slush on both the taxiway and the runway.
- The improper operation taken by the crew for taking off from a contaminated runway, namely not heating the brakes and not delaying the retraction of the landing gear to allow the contaminant to fall away. The crew also did not make a positive landing to ensure that any remaining frozen contaminant was dislodged.
Accident investigation:
|
| |
Investigating agency: | CIAIAC |
Report number: | IN-005/2015 |
Status: | Investigation completed |
Duration: | |
Download report: | Final report |
|
Sources:
http://www.fomento.es/NR/rdonlyres/B2086E95-45BE-4179-850E-1A7FCA9F5150/142188/2015_005_ENG.pdf Revision history:
Date/time | Contributor | Updates |
10-Jun-2017 19:48 |
harro |
Added |
11-Jun-2017 07:45 |
harro |
Updated [Location] |
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