<< >> NASA ASRS Report 861913, November 2009

SF340 captain reports malfunctioning wing and stabilizer deice boots shortly after takeoff; with return to departure airport.

Attributes
ACN	861913
Time
Date	200911
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Flight Phase	Climb Initial Climb
Flight Plan	IFR
Component
Aircraft Component	Aerofoil Ice System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 12 Flight Crew Total 2200 Flight Crew Type 1100
Events
Anomaly	Aircraft Equipment Problem Critical Inflight Event / Encounter Weather / Turbulence

Narrative:

On climbout at approximately 3500 MSL we entered a layer with an OAT below 0C. I switched the wing de-ice boots to cont and almost immediately received a timer light. We performed the emergency/non-normal checklist and the fault seemed to clear with the system on one cycle. After approx 5 minutes using one cycle the timer light illuminated again. We contacted dispatch and under their guidance we began our return to ZZZ. While returning we followed the emergency/non-normal checklist again and this time discovered the stabilizer boots would not inflate and followed the malfunction adjustment chart and made a safe landing at ZZZ while manually cycling the wing boots while in the clouds. After landing we found no fault in the boots themselves that were visible from the ground.

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Original NASA ASRS Text

Title: SF340 Captain reports malfunctioning wing and stabilizer deice boots shortly after takeoff; with return to departure airport.

Narrative: On climbout at approximately 3500 MSL we entered a layer with an OAT below 0C. I switched the wing De-ice boots to CONT and almost immediately received a TIMER light. We performed the Emergency/Non-normal checklist and the fault seemed to clear with the system on One Cycle. After approx 5 minutes using One Cycle the TIMER light illuminated again. We contacted Dispatch and under their guidance we began our return to ZZZ. While returning we followed the Emergency/Non-Normal checklist again and this time discovered the STAB boots would not inflate and followed the Malfunction Adjustment chart and made a safe landing at ZZZ while manually cycling the wing boots while in the clouds. After landing we found no fault in the boots themselves that were visible from the ground.

Data retrieved from NASA's ASRS site as of April 2012 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.