Narrative:

Ferry flight tul-dfw. 1 deadheader on board. A tul flight check airman. Uneventful flight to dfw. Flew ILS runway 17C. WX 5000 ft broken, 5 mi visibility. Normal approach and landing. After clearing the runway and taxiing a hose or something from the left wheel area, we had normal cockpit indications so we elected to continue taxiing. While waiting to cross runway 17R the flight engineer said system 'a' hydraulic was low but still above the minimum 2.5 gallons. We only had a short taxi to the gate and everything was normal, so we elected to taxi to gate. We wrote up that system 'a' needed servicing. It was still above the minimum 2.5 gallons and we wrote up that it was reported that we had a hose or something trailing the aircraft. Before we could get out of the seat, a mechanic stuck his head in the door and asked if we had hit a bird. We said no, and went down to look at the left wheel well. We saw that the hydraulic service door had been caved in and that there was indeed a hose trailing behind the aircraft. There were no bird remains and there was no different colored paint. The only thing we heard the entire flight was a loud noise at about 500 ft but we thought it was the deadheader slamming the lavatory door. I can only guess that the service door opened on touchdown then slammed shut causing the damage.

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Original NASA ASRS Text

Title: B727 SUFFERS DAMAGE TO ITS 'A' HYD SYS FROM AN UNDETERMINED SOURCE AFTER LNDG AT DFW, TX.

Narrative: FERRY FLT TUL-DFW. 1 DEADHEADER ON BOARD. A TUL FLT CHK AIRMAN. UNEVENTFUL FLT TO DFW. FLEW ILS RWY 17C. WX 5000 FT BROKEN, 5 MI VISIBILITY. NORMAL APCH AND LNDG. AFTER CLRING THE RWY AND TAXIING A HOSE OR SOMETHING FROM THE L WHEEL AREA, WE HAD NORMAL COCKPIT INDICATIONS SO WE ELECTED TO CONTINUE TAXIING. WHILE WAITING TO CROSS RWY 17R THE FE SAID SYS 'A' HYD WAS LOW BUT STILL ABOVE THE MINIMUM 2.5 GALLONS. WE ONLY HAD A SHORT TAXI TO THE GATE AND EVERYTHING WAS NORMAL, SO WE ELECTED TO TAXI TO GATE. WE WROTE UP THAT SYS 'A' NEEDED SVCING. IT WAS STILL ABOVE THE MINIMUM 2.5 GALLONS AND WE WROTE UP THAT IT WAS RPTED THAT WE HAD A HOSE OR SOMETHING TRAILING THE ACFT. BEFORE WE COULD GET OUT OF THE SEAT, A MECH STUCK HIS HEAD IN THE DOOR AND ASKED IF WE HAD HIT A BIRD. WE SAID NO, AND WENT DOWN TO LOOK AT THE L WHEEL WELL. WE SAW THAT THE HYD SVC DOOR HAD BEEN CAVED IN AND THAT THERE WAS INDEED A HOSE TRAILING BEHIND THE ACFT. THERE WERE NO BIRD REMAINS AND THERE WAS NO DIFFERENT COLORED PAINT. THE ONLY THING WE HEARD THE ENTIRE FLT WAS A LOUD NOISE AT ABOUT 500 FT BUT WE THOUGHT IT WAS THE DEADHEADER SLAMMING THE LAVATORY DOOR. I CAN ONLY GUESS THAT THE SVC DOOR OPENED ON TOUCHDOWN THEN SLAMMED SHUT CAUSING THE DAMAGE.

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.