Aircraft equipment problem. Wrong tires installed and were blown out on takeoff and landing.

Attributes
ACN	308129
Time
Date	199506
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bwi
State Reference	MD
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	308129
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	307897
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : declared emergency none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On jun/xx/95, dc-9 aircraft blew the left outboard main landing gear tire on takeoff from dca. The aircraft diverted to bwi without incident. Examination of the blown tire revealed that it was of the incorrect ply rating. The correct ply rating for a dc-9 is 24 ply. The tire that blew-out was a 16 ply.further investigation at the wheel shop in gso revealed a tire for a boeing 737 with the incorrect ply rating on the tread. The ply rating on the tread was 24 and the ply rating on the tire carcass was 26. Also, investigation revealed a tire for a dc-9 in the tire slot for a F-28. To insure that this type of error does not occur again, the wheel shop now has a policy that requires the mechanic that torques the wheel bolts to mark with a 'check mark' the tire size and ply rating on both the tire carcass and the tire re-tread. Also, the wheel build-up will be stamped to that effect.

Original NASA ASRS Text

Title: ACFT EQUIP PROB. WRONG TIRES INSTALLED AND WERE BLOWN OUT ON TKOF AND LNDG.

Narrative: ON JUN/XX/95, DC-9 ACFT BLEW THE L OUTBOARD MAIN LNDG GEAR TIRE ON TKOF FROM DCA. THE ACFT DIVERTED TO BWI WITHOUT INCIDENT. EXAMINATION OF THE BLOWN TIRE REVEALED THAT IT WAS OF THE INCORRECT PLY RATING. THE CORRECT PLY RATING FOR A DC-9 IS 24 PLY. THE TIRE THAT BLEW-OUT WAS A 16 PLY.FURTHER INVESTIGATION AT THE WHEEL SHOP IN GSO REVEALED A TIRE FOR A BOEING 737 WITH THE INCORRECT PLY RATING ON THE TREAD. THE PLY RATING ON THE TREAD WAS 24 AND THE PLY RATING ON THE TIRE CARCASS WAS 26. ALSO, INVESTIGATION REVEALED A TIRE FOR A DC-9 IN THE TIRE SLOT FOR A F-28. TO INSURE THAT THIS TYPE OF ERROR DOES NOT OCCUR AGAIN, THE WHEEL SHOP NOW HAS A POLICY THAT REQUIRES THE MECH THAT TORQUES THE WHEEL BOLTS TO MARK WITH A 'CHK MARK' THE TIRE SIZE AND PLY RATING ON BOTH THE TIRE CARCASS AND THE TIRE RE-TREAD. ALSO, THE WHEEL BUILD-UP WILL BE STAMPED TO THAT EFFECT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.