Air carrier medium large transport PIC admits error in not coordinating with maintenance control prior to departing cid, ia, with a tire that was low in pressure. Initially, the right outboard tire was missed by the PIC on the preflight but the non contract mechanic caught that discrepancy during pushback. On their landing at den the tire blew and came off the rim. Both right tires were replaced.

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Attributes
ACN	370789
Time
Date	199706
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : cle
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	landing other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 200
ASRS Report	370789
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 240 flight time total : 4300 flight time type : 1000
ASRS Report	370790
Events
Anomaly	aircraft equipment problem : critical non adherence other other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

The captain (PF) did walkaround. A visual inspection of all 4 mains showed all were normal. 3 gauges read 170-180 psi (normal). The third gauge was at 6 O'clock, dirty, and hard to read and ignored. After pushback, tug driver mentioned right outboard main was low (the one whose gauge was not checked). Captain had guide man check pressure before starting engine. Pressure was 100 psi. Plane was pulled back to gate and contract maintenance filled it to 172 psi. Tire was flat on landing as reported by another aircraft approaching from the rear. It reported first smoke then tire separating from rim. We pulled aircraft to deice pad next to us. Called maintenance for advice. Maintenance changed tires (both right mains) on the deice pad. We then taxied to gate. What captain did wrong was not to notify maintenance in sfo before leaving cid. Supplemental information from acn 370790: on pushback at cid the ground crew said our right outboard tire looked low. We had a mechanic (contract maintenance at cid) look at it. He filled it to normal pressure and we took the aircraft to den. On landing in den the tire popped or was already flat.

Original NASA ASRS Text

Title: ACR MLG PIC ADMITS ERROR IN NOT COORDINATING WITH MAINT CTL PRIOR TO DEPARTING CID, IA, WITH A TIRE THAT WAS LOW IN PRESSURE. INITIALLY, THE R OUTBOARD TIRE WAS MISSED BY THE PIC ON THE PREFLT BUT THE NON CONTRACT MECH CAUGHT THAT DISCREPANCY DURING PUSHBACK. ON THEIR LNDG AT DEN THE TIRE BLEW AND CAME OFF THE RIM. BOTH R TIRES WERE REPLACED.

Narrative: THE CAPT (PF) DID WALKAROUND. A VISUAL INSPECTION OF ALL 4 MAINS SHOWED ALL WERE NORMAL. 3 GAUGES READ 170-180 PSI (NORMAL). THE THIRD GAUGE WAS AT 6 O'CLOCK, DIRTY, AND HARD TO READ AND IGNORED. AFTER PUSHBACK, TUG DRIVER MENTIONED R OUTBOARD MAIN WAS LOW (THE ONE WHOSE GAUGE WAS NOT CHKED). CAPT HAD GUIDE MAN CHK PRESSURE BEFORE STARTING ENG. PRESSURE WAS 100 PSI. PLANE WAS PULLED BACK TO GATE AND CONTRACT MAINT FILLED IT TO 172 PSI. TIRE WAS FLAT ON LNDG AS RPTED BY ANOTHER ACFT APCHING FROM THE REAR. IT RPTED FIRST SMOKE THEN TIRE SEPARATING FROM RIM. WE PULLED ACFT TO DEICE PAD NEXT TO US. CALLED MAINT FOR ADVICE. MAINT CHANGED TIRES (BOTH R MAINS) ON THE DEICE PAD. WE THEN TAXIED TO GATE. WHAT CAPT DID WRONG WAS NOT TO NOTIFY MAINT IN SFO BEFORE LEAVING CID. SUPPLEMENTAL INFO FROM ACN 370790: ON PUSHBACK AT CID THE GND CREW SAID OUR R OUTBOARD TIRE LOOKED LOW. WE HAD A MECH (CONTRACT MAINT AT CID) LOOK AT IT. HE FILLED IT TO NORMAL PRESSURE AND WE TOOK THE ACFT TO DEN. ON LNDG IN DEN THE TIRE POPPED OR WAS ALREADY FLAT.

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.