An LR60 on takeoff below V1 speed rejected the takeoff due to an aft cabin door warning light illumi...

Attributes
ACN	410140
Time
Date	199807
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bdl
State Reference	CT
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zan
Operator	general aviation : corporate
Make Model Name	Learjet 60
Operating Under FAR Part	Part 91
Navigation In Use	Other Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 6600 flight time type : 400
ASRS Report	410140
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical 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:

Rejected takeoff -- aborted takeoff upon activation of red warning light, 'aft cabin door,' and master caution illuminated. IAS was approximately 10-15 KTS below computed V1 speed for conditions. Abort was performed with thrust reversers, autospoilers and minimal braking. After clearing runway, aft cabin door was inspected per the MEL issued for this aircraft. An MEL entry was noted on the flight log and all applicable procedures complied with. After MEL compliance, we taxied and continued our departure. This warning light is a frequent problem on the lear 60. Callback conversation with reporter revealed the following information: the reporter stated the aft cargo door was checked by the first officer for being closed and locked during the preflight. The reporter said the limited experience level of the first officer dictated the rejected takeoff. The reporter said the door warning system on this aircraft is the cause of frequent false warnings. The reporter stated it is a microswitch system and the switch actuator or the switch easily become out of adjustment.

Original NASA ASRS Text

Title: AN LR60 ON TKOF BELOW V1 SPD REJECTED THE TKOF DUE TO AN AFT CABIN DOOR WARNING LIGHT ILLUMINATED.

Narrative: REJECTED TKOF -- ABORTED TKOF UPON ACTIVATION OF RED WARNING LIGHT, 'AFT CABIN DOOR,' AND MASTER CAUTION ILLUMINATED. IAS WAS APPROX 10-15 KTS BELOW COMPUTED V1 SPD FOR CONDITIONS. ABORT WAS PERFORMED WITH THRUST REVERSERS, AUTOSPOILERS AND MINIMAL BRAKING. AFTER CLRING RWY, AFT CABIN DOOR WAS INSPECTED PER THE MEL ISSUED FOR THIS ACFT. AN MEL ENTRY WAS NOTED ON THE FLT LOG AND ALL APPLICABLE PROCS COMPLIED WITH. AFTER MEL COMPLIANCE, WE TAXIED AND CONTINUED OUR DEP. THIS WARNING LIGHT IS A FREQUENT PROB ON THE LEAR 60. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AFT CARGO DOOR WAS CHKED BY THE FO FOR BEING CLOSED AND LOCKED DURING THE PREFLT. THE RPTR SAID THE LIMITED EXPERIENCE LEVEL OF THE FO DICTATED THE REJECTED TKOF. THE RPTR SAID THE DOOR WARNING SYS ON THIS ACFT IS THE CAUSE OF FREQUENT FALSE WARNINGS. THE RPTR STATED IT IS A MICROSWITCH SYS AND THE SWITCH ACTUATOR OR THE SWITCH EASILY BECOME OUT OF ADJUSTMENT.

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.

An LR60 on takeoff below V1 speed rejected the takeoff due to an aft cabin door warning light illuminated.