NTSB Identification: DCA85AA013.
The docket is stored on NTSB microfiche number 28363.
Nonscheduled 14 CFR
Accident occurred Tuesday, February 05, 1985 in PHILADELPHIA, PA
Aircraft: McDonnell Douglas DC-9-15, registration: N926AX
Injuries: 2 Serious.

AFTER LNDG, THE ACFT WAS PARKED ON THE RAMP FOR APRX 39 MIN TO LOAD CARGO. DRG THAT TIME, LGT FREEZING DRIZZLE WAS FALLING, INTERMITTENTLY MIXED WITH ICE PELLETS & SNW. THE CREW CHECKED THE ACFT SURFACES FROM THE COCKPIT & ENTRY DOOR, BUT OBSERVED NO ICE OR SNW ADHERING TO THE TOPS OF THE WINGS, NOSE SECTION, WINDSHIELD OR ABOVE THE DOOR. THE CAPT DECLINED AN OFFER TO DE-ICE, THO OTR ACFT WERE BEING DE-ICED. THE TAKEOFF WAS NRML (18 DEG NOSE UP ATTITUDE) UNTIL JUST AFTER LIFT-OFF, THEN THE ACFT ENTERED AN UNCOMMANDED L ROLL & BOTH ENGS COMPRESSOR STALLED. THE CAPT CORRECTED WITH L AILERON & RUDDER, THEN BEGAN ABORTING THE TAKEOFF. THE ACFT TOUCHED DWN LEFT OF THE RWY ON THE TAIL SKID & R WING TIP,APRX 5600' FROM THE THRESHOLD & ON A 070 DEG HDG. IT THEN TRAVELED ANOTHER 2025' IN A SWEEPING RIGHT ARC, HITTING 2 RWY SIGNS & CAME TO REST HDG WEST WITH THE R PYLON BENT DOWN. INV REVEALED A THIN LAYER OF ICE (EST 0.15' THICK) WOULD HAVE BEEN ON THE WINGS, RAISING THE ACFT'S STALL SPEED. WHEN DC-9-15 ACFT STALL, ENGS ARE SUSCEPTIBLE TO COMPRESSOR STALLS.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WING..ICE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ICE/FROST REMOVAL FROM AIRCRAFT..NOT PERFORMED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

STALL..INADVERTENT..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..RAIN


Contributing Factors

WEATHER CONDITION..SNOW


Contributing Factors

WEATHER CONDITION..ICING CONDITIONS


Contributing Factors

LIGHT CONDITION..DARK NIGHT


Contributing Factors

VISUAL/AURAL DETECTION..PILOT IN COMMAND

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