A lockheed 1011 was dispatched in non compliance with the #1 VHF navigation receiver deferred. Actual write-up was automatic-tune button inoperative.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	521248
Time
Date	200108
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	FO
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	L-1011 Tri-Star All Series
Operating Under FAR Part	Part 121
Flight Phase	ground : pushback ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : cfi pilot : atp pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 6500 flight time type : 800
ASRS Report	521248
Person 2
Affiliation	company : air carrier
Function	flight crew : captain
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : manuals contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : fault isolation performance deficiency : logbook entry
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

We were briefed by the inbound crew of some minor discrepancies including the #1 VHF navigation automatic-tune button. Being a minor discrepancy maintenance personnel deferred the automatic-tune button along with the other minor write-ups. The mechanic deferring the automatic-tune button made an error in the deferral and used the deferral number for the entire VHF navigation radio instead. There was nothing wrong with the VHF navigation radio itself and the automatic-tune button worked as well. During our preflight preparations there were several distractions including having to move the aircraft to a different gate and contracting cleaning and catering which should have already been done. With these added delays we were coming close to missing our slot time out of ZZZZ and were in a hurry to get everything done. Being that the navigation radios worked fine and the deferred automatic-tune button was even working and was a minor item anyway we did not double-check the deferral number against the deferral. The deferral number was actually that of the VHF navigation #1 radio, which on paper made it illegal for us to do class ii navigation. Because we were unaware of the error in the deferral number we safely took off and completed the flight. Upon arrival at sea we were notified that the deferral number was actually that of the VHF navigation radio and we should not have taken off from ZZZZ.

Original NASA ASRS Text

Title: A LOCKHEED 1011 WAS DISPATCHED IN NON COMPLIANCE WITH THE #1 VHF NAV RECEIVER DEFERRED. ACTUAL WRITE-UP WAS AUTO-TUNE BUTTON INOP.

Narrative: WE WERE BRIEFED BY THE INBOUND CREW OF SOME MINOR DISCREPANCIES INCLUDING THE #1 VHF NAV AUTO-TUNE BUTTON. BEING A MINOR DISCREPANCY MAINT PERSONNEL DEFERRED THE AUTO-TUNE BUTTON ALONG WITH THE OTHER MINOR WRITE-UPS. THE MECH DEFERRING THE AUTO-TUNE BUTTON MADE AN ERROR IN THE DEFERRAL AND USED THE DEFERRAL NUMBER FOR THE ENTIRE VHF NAV RADIO INSTEAD. THERE WAS NOTHING WRONG WITH THE VHF NAV RADIO ITSELF AND THE AUTO-TUNE BUTTON WORKED AS WELL. DURING OUR PREFLT PREPARATIONS THERE WERE SEVERAL DISTRACTIONS INCLUDING HAVING TO MOVE THE ACFT TO A DIFFERENT GATE AND CONTRACTING CLEANING AND CATERING WHICH SHOULD HAVE ALREADY BEEN DONE. WITH THESE ADDED DELAYS WE WERE COMING CLOSE TO MISSING OUR SLOT TIME OUT OF ZZZZ AND WERE IN A HURRY TO GET EVERYTHING DONE. BEING THAT THE NAV RADIOS WORKED FINE AND THE DEFERRED AUTO-TUNE BUTTON WAS EVEN WORKING AND WAS A MINOR ITEM ANYWAY WE DID NOT DOUBLE-CHK THE DEFERRAL NUMBER AGAINST THE DEFERRAL. THE DEFERRAL NUMBER WAS ACTUALLY THAT OF THE VHF NAV #1 RADIO, WHICH ON PAPER MADE IT ILLEGAL FOR US TO DO CLASS II NAV. BECAUSE WE WERE UNAWARE OF THE ERROR IN THE DEFERRAL NUMBER WE SAFELY TOOK OFF AND COMPLETED THE FLT. UPON ARR AT SEA WE WERE NOTIFIED THAT THE DEFERRAL NUMBER WAS ACTUALLY THAT OF THE VHF NAV RADIO AND WE SHOULD NOT HAVE TAKEN OFF FROM ZZZZ.

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.