<< >> NASA ASRS Report 591848, August 2003

A canadair cl-65 nose gear steering report was cleared by a contract technician by cleaning the tiller mechanism. Reinstalled mechanism wrong.

Attributes
ACN	591848
Time
Date	200308
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	other
Qualification	technician : airframe technician : powerplant
Experience	maintenance technician : 15
ASRS Report	591848
Person 2
Affiliation	other
Function	maintenance : technician oversight : coordinator
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	performance deficiency : training performance deficiency : non compliance with legal requirements performance deficiency : unqualified personnel performance deficiency : logbook entry performance deficiency : installation
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

Aircraft was inbound with the discrepancy nosewheel steering not ctring. I was called out by another airline to clean nosewheel steering ctring mechanism on the tiller. I removed the 4 screws securing the tiller to the side wall in flight deck, lifted it from its position and cleaned ctring mechanism. I then reseated the tiller in position and secured it. When I reseated it, I inadvertently positioned it wrong. I then tested the nosewheel steering which worked properly. When the outbound crew arrived, they noticed something was wrong with the tiller and entered it in the logbook. Another mechanic from my crew was called out as I had already gone home and he repositioned the tiller properly. The only contributing factor was my lack of familiarity with this aircraft type. Fatigue may have also played a role.

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Original NASA ASRS Text

Title: A CANADAIR CL-65 NOSE GEAR STEERING RPT WAS CLRED BY A CONTRACT TECHNICIAN BY CLEANING THE TILLER MECHANISM. REINSTALLED MECHANISM WRONG.

Narrative: ACFT WAS INBOUND WITH THE DISCREPANCY NOSEWHEEL STEERING NOT CTRING. I WAS CALLED OUT BY ANOTHER AIRLINE TO CLEAN NOSEWHEEL STEERING CTRING MECHANISM ON THE TILLER. I REMOVED THE 4 SCREWS SECURING THE TILLER TO THE SIDE WALL IN FLT DECK, LIFTED IT FROM ITS POS AND CLEANED CTRING MECHANISM. I THEN RESEATED THE TILLER IN POS AND SECURED IT. WHEN I RESEATED IT, I INADVERTENTLY POSITIONED IT WRONG. I THEN TESTED THE NOSEWHEEL STEERING WHICH WORKED PROPERLY. WHEN THE OUTBOUND CREW ARRIVED, THEY NOTICED SOMETHING WAS WRONG WITH THE TILLER AND ENTERED IT IN THE LOGBOOK. ANOTHER MECH FROM MY CREW WAS CALLED OUT AS I HAD ALREADY GONE HOME AND HE REPOSITIONED THE TILLER PROPERLY. THE ONLY CONTRIBUTING FACTOR WAS MY LACK OF FAMILIARITY WITH THIS ACFT TYPE. FATIGUE MAY HAVE ALSO PLAYED A ROLE.

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.