<< >> NASA ASRS Report 478013, June 2000

A light transport 2 engine turboprop was dispatched and operated into icing conditions in non compliance with an open unanswered log item on deicer boot failure.

Attributes
ACN	478013
Time
Date	200006
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Dawn
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 85 flight time total : 2100 flight time type : 85
ASRS Report	478013
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : boot fail light other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	performance deficiency : fault isolation performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : repair
Supplementary
Problem Areas	Company Aircraft Flight Crew Human Performance Maintenance Human Performance Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

Climbing through 17000 ft, we went through a thin layer of clouds. The ice condition light illuminated and I put the leading edge ice protection on. After approximately 10 seconds, the boot fail light began illuminating. At about the same time, we left the icing condition and remained clear of icing conditions for the remainder of the flight. After calling flight control in the air, we contacted them on the ground. When I went to write up the discrepancy in the log, I found one clear log and one with an open write-up for the failure of the leading edge boots. I immediately contacted maintenance and let them know the situation. I also let the station know that the aircraft would need maintenance clearance before it could have the station and therefore would probably be delayed. I must have passed over the open write-up when initially checking the paperwork. Our release had no MEL items and there was nothing deferred.

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Original NASA ASRS Text

Title: A LIGHT TRANSPORT 2 ENG TURBOPROP WAS DISPATCHED AND OPERATED INTO ICING CONDITIONS IN NON COMPLIANCE WITH AN OPEN UNANSWERED LOG ITEM ON DEICER BOOT FAILURE.

Narrative: CLBING THROUGH 17000 FT, WE WENT THROUGH A THIN LAYER OF CLOUDS. THE ICE CONDITION LIGHT ILLUMINATED AND I PUT THE LEADING EDGE ICE PROTECTION ON. AFTER APPROX 10 SECONDS, THE BOOT FAIL LIGHT BEGAN ILLUMINATING. AT ABOUT THE SAME TIME, WE LEFT THE ICING CONDITION AND REMAINED CLR OF ICING CONDITIONS FOR THE REMAINDER OF THE FLT. AFTER CALLING FLT CTL IN THE AIR, WE CONTACTED THEM ON THE GND. WHEN I WENT TO WRITE UP THE DISCREPANCY IN THE LOG, I FOUND ONE CLR LOG AND ONE WITH AN OPEN WRITE-UP FOR THE FAILURE OF THE LEADING EDGE BOOTS. I IMMEDIATELY CONTACTED MAINT AND LET THEM KNOW THE SIT. I ALSO LET THE STATION KNOW THAT THE ACFT WOULD NEED MAINT CLRNC BEFORE IT COULD HAVE THE STATION AND THEREFORE WOULD PROBABLY BE DELAYED. I MUST HAVE PASSED OVER THE OPEN WRITE-UP WHEN INITIALLY CHKING THE PAPERWORK. OUR RELEASE HAD NO MEL ITEMS AND THERE WAS NOTHING DEFERRED.

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.