Flight crew of air carrier light transport aircraft failed to make an aircraft maintenance discrepan...

Attributes
ACN	232325
Time
Date	199301
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : guc
State Reference	CO
Altitude	agl bound lower : 100 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other landing other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 245 flight time total : 10800 flight time type : 3000
ASRS Report	232325
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	aircraft : equipment problem dissipated flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After departure a cabin door warning light illuminated. We followed approved procedure (depressurized) and landed at next airport along route of flight with agreement of our dispatcher. We recycled the door and now the annunciator works perfectly. The aircraft had logged a series of annunciator gremlins that were signed off 'unable to duplicate.' we saw no reason to delay a flight for maintenance when there was nothing to fix. (Even if the annunciator stayed wrong, it can be deferred without an inspection.) crew, maintenance, and dispatch agreed to release. The flight as was without a logbook write-up or corrective actions. It occurred to us later that even though nothing was 'broken' and there was nothing to 'fix' that we should have written up the 'intermittent' annunciator problem to explain the unscheduled landing as well as to leave an additional record of this unreliable system for posterity. Contributing factors: my knowledge of the aircraft, 3000 hours PIC and 3 yrs as a classroom instructor in this aircraft's system. A logbook full of 'unable to duplicate' signoffs. By the way, as of today (next day) the light never again demonstrated any incorrect indications.

Original NASA ASRS Text

Title: FLC OF ACR LTT ACFT FAILED TO MAKE AN ACFT MAINT DISCREPANCY LOGBOOK, ENTRY AFTER AN UNSCHEDULED LNDG TO INVESTIGATE A CABIN DOOR WARNING LIGHT.

Narrative: AFTER DEP A CABIN DOOR WARNING LIGHT ILLUMINATED. WE FOLLOWED APPROVED PROC (DEPRESSURIZED) AND LANDED AT NEXT ARPT ALONG RTE OF FLT WITH AGREEMENT OF OUR DISPATCHER. WE RECYCLED THE DOOR AND NOW THE ANNUNCIATOR WORKS PERFECTLY. THE ACFT HAD LOGGED A SERIES OF ANNUNCIATOR GREMLINS THAT WERE SIGNED OFF 'UNABLE TO DUPLICATE.' WE SAW NO REASON TO DELAY A FLT FOR MAINT WHEN THERE WAS NOTHING TO FIX. (EVEN IF THE ANNUNCIATOR STAYED WRONG, IT CAN BE DEFERRED WITHOUT AN INSPECTION.) CREW, MAINT, AND DISPATCH AGREED TO RELEASE. THE FLT AS WAS WITHOUT A LOGBOOK WRITE-UP OR CORRECTIVE ACTIONS. IT OCCURRED TO US LATER THAT EVEN THOUGH NOTHING WAS 'BROKEN' AND THERE WAS NOTHING TO 'FIX' THAT WE SHOULD HAVE WRITTEN UP THE 'INTERMITTENT' ANNUNCIATOR PROB TO EXPLAIN THE UNSCHEDULED LNDG AS WELL AS TO LEAVE AN ADDITIONAL RECORD OF THIS UNRELIABLE SYS FOR POSTERITY. CONTRIBUTING FACTORS: MY KNOWLEDGE OF THE ACFT, 3000 HRS PIC AND 3 YRS AS A CLASSROOM INSTRUCTOR IN THIS ACFT'S SYS. A LOGBOOK FULL OF 'UNABLE TO DUPLICATE' SIGNOFFS. BY THE WAY, AS OF TODAY (NEXT DAY) THE LIGHT NEVER AGAIN DEMONSTRATED ANY INCORRECT INDICATIONS.

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.

Flight crew of air carrier light transport aircraft failed to make an aircraft maintenance discrepancy logbook, entry after an unscheduled landing to investigate a cabin door warning light.