ASN Wikibase Occurrence # 59964
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| Date: | Tuesday 12 May 2009 |
| Time: | 18:45 LT |
| Type: |  Boeing 737-3H4 |
| Owner/operator: | Southwest Airlines |
| Registration: | N371SW |
| MSN: | 26598/2500 |
| Year of manufacture: | 1993 |
| Total airframe hrs: | 52892 hours |
| Engine model: | CFM 56 |
| Fatalities: | Fatalities: 0 / Occupants: 53 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Houston-William P. Hobby Airport, TX (HOU/KHOU) -
 United States of America
|
| Phase: | Landing |
| Nature: | Passenger - Scheduled |
| Departure airport: | New Orleans-Louis Armstrong International Airport, LA (MSY/KMSY) |
| Houston-William P. Hobby Airport, TX (HOU/KHOU) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Southwest Airlines flight WN519, a Boeing 737-3H4, experienced a fire in the area of the right main landing gear when three of the four main landing gear tires blew-out during the landing on runway 22 at the Houston-William P. Hobby Airport, TX (HOU). The airplane sustained minor damage. The 2 flight crew, 3 flight attendants, and 48 passengers evacuated the airplane on to the runway.
Two passengers suffered minor injuries during the evacuation.
Prior to the flight, the flight crew and dispatcher were aware that the anti-skid system was inoperative. They had requested and were granted use of the longest runway for landing. The captain made a normal landing in the target area. After touchdown, he reduced the thrust levers to idle, rapidly brought the speed brake to the full-up detent, employed reverse thrust, and applied manual wheel braking. Marks on the runway showed that about 550 feet after initial touchdown, the right main landing gear tires blew. The tower controller and other aircraft advised the flight crew that there was a fire in the area of the right main landing gear. After the airplane came to a stop, the captain initiated an emergency evacuation on the runway. All 54 persons on-board exited the airplane in 57 seconds, and the fire was extinguished soon after. Two passengers reported minor injuries. The airplane sustained minor damage to the right main landing gear and a portion of the right flap. Examination of data retrieved from the flight data recorder showed that during the touchdown and landing roll, at 19:45:31, the recorded left brake pressure was 770 pounds per square inch (psi). The maximum recorded right brake pressure was 1430 psi at 19:45:32. The maximum recorded left brake pressure was 990 psi. With the anti-skid system disabled, the pilot applying excessive braking during touchdown would cause the wheels to lock and the associated tires to blow. The airplane's quick reference handbook states "Use minimum braking consistent with runway conditions to reduce the possibility of a tire blowout."
Probable Cause: The pilot's inadvertent application of excessive braking after touchdown, which caused the right wheels to lock and several tires to blow and resulted in a subsequent brake fire.
Accident investigation:
 |
|
Sources:
NTSB CEN09IA294
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-May-2009 21:05 | slowkid | Added |
| 13-May-2009 10:40 | CAN | Updated |
| 14-May-2009 21:01 | lufegimenez | Updated |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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