<< >> NASA ASRS Report 256225, November 1993

Airstairs door of an large transport air carrier aircraft open and extended during takeoff. Flight crew return land.

Attributes
ACN	256225
Time
Date	199311
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	256225
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	256224
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During takeoff, aft airstairs deployed (extended). Cooper vane did not engage airstairs. Crew of flight observed amber 'aft airstair' light illuminated and visually verified airstairs were down. Aircraft returned to denver. Prior to departure from denver, aircraft arrived from iah with inbound PIREP on aft airstair amber light illuminated in-flight. Maintenance (myself and another mechanic) placarded amber aft airstair light inoperative per MEL and complied with ddp. Review of history showed aircraft had maintenance done on aft airstairs during iah stop. Aircraft took off, airstairs fell down and aircraft returned to denver. Minimal damage to aft airstairs on landing.

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Original NASA ASRS Text

Title: AIRSTAIRS DOOR OF AN LGT ACR ACFT OPEN AND EXTENDED DURING TKOF. FLC RETURN LAND.

Narrative: DURING TKOF, AFT AIRSTAIRS DEPLOYED (EXTENDED). COOPER VANE DID NOT ENGAGE AIRSTAIRS. CREW OF FLT OBSERVED AMBER 'AFT AIRSTAIR' LIGHT ILLUMINATED AND VISUALLY VERIFIED AIRSTAIRS WERE DOWN. ACFT RETURNED TO DENVER. PRIOR TO DEP FROM DENVER, ACFT ARRIVED FROM IAH WITH INBOUND PIREP ON AFT AIRSTAIR AMBER LIGHT ILLUMINATED INFLT. MAINT (MYSELF AND ANOTHER MECH) PLACARDED AMBER AFT AIRSTAIR LIGHT INOP PER MEL AND COMPLIED WITH DDP. REVIEW OF HISTORY SHOWED ACFT HAD MAINT DONE ON AFT AIRSTAIRS DURING IAH STOP. ACFT TOOK OFF, AIRSTAIRS FELL DOWN AND ACFT RETURNED TO DENVER. MINIMAL DAMAGE TO AFT AIRSTAIRS ON LNDG.

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.