A lead mechanic reports on miscommunication between himself and an outstation mechanic regarding fli...

Attributes
ACN	794615
Time
Date	200807
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
ASRS Report	794615
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : briefing performance deficiency : fault isolation performance deficiency : logbook entry performance deficiency : testing performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Mr X was working the aircraft at the outstation. He reported to me that he was deferring the #1 navigation due to the PIREP -- #1 navigation failed. I reviewed the MEL and confirmed that would be the proper MEL for that item. Maintenance deferred the item with the crew along with the associated taws mode 5 MEL. Upon arrival; ZZZ crew called maintenance then stated the first officer also had the CDI needle missing in VOR mode on his side and stated the captain side had a shark's tooth displayed. He said this shark's tooth issue was in his original PIREP in ZZZ1. That information was not given to me by mr X. I asked if he was told that by the crew; and he stated no. The shark's tooth is a giveaway to me that there may have been a power supply issue. In ZZZ; avionics found the essential avionics circuit breaker tripped. They reset it and all system started working properly. They cleared the ZZZ PIREP and the 2 MEL's. PIREP in ZZZ associated to MEL's. Troubleshot and cleared all items. Either the crew did not tell mr X about the shark's tooth on the captain RMI or they did; and he did not forward that information to me. Suggest pulling the phone tapes to see if the crew gave him that information. Depending on what happened; make sure all information pertaining to discrepancy be given to all persons involved in the deferral.

Original NASA ASRS Text

Title: A LEAD MECHANIC REPORTS ON MISCOMMUNICATION BETWEEN HIMSELF AND AN OUTSTATION MECHANIC REGARDING FLT CREW LOG WRITE-UP; #1 NAV FAILED. ITEM DEFERRED. MAINT BASE LATER FOUND ESSENTIAL AVIONICS CIRCUIT BREAKER TRIPPED ON SAAB 340B ACFT.

Narrative: MR X WAS WORKING THE ACFT AT THE OUTSTATION. HE RPTED TO ME THAT HE WAS DEFERRING THE #1 NAV DUE TO THE PIREP -- #1 NAV FAILED. I REVIEWED THE MEL AND CONFIRMED THAT WOULD BE THE PROPER MEL FOR THAT ITEM. MAINT DEFERRED THE ITEM WITH THE CREW ALONG WITH THE ASSOCIATED TAWS MODE 5 MEL. UPON ARR; ZZZ CREW CALLED MAINT THEN STATED THE FO ALSO HAD THE CDI NEEDLE MISSING IN VOR MODE ON HIS SIDE AND STATED THE CAPT SIDE HAD A SHARK'S TOOTH DISPLAYED. HE SAID THIS SHARK'S TOOTH ISSUE WAS IN HIS ORIGINAL PIREP IN ZZZ1. THAT INFO WAS NOT GIVEN TO ME BY MR X. I ASKED IF HE WAS TOLD THAT BY THE CREW; AND HE STATED NO. THE SHARK'S TOOTH IS A GIVEAWAY TO ME THAT THERE MAY HAVE BEEN A PWR SUPPLY ISSUE. IN ZZZ; AVIONICS FOUND THE ESSENTIAL AVIONICS CIRCUIT BREAKER TRIPPED. THEY RESET IT AND ALL SYS STARTED WORKING PROPERLY. THEY CLRED THE ZZZ PIREP AND THE 2 MEL'S. PIREP IN ZZZ ASSOCIATED TO MEL'S. TROUBLESHOT AND CLRED ALL ITEMS. EITHER THE CREW DID NOT TELL MR X ABOUT THE SHARK'S TOOTH ON THE CAPT RMI OR THEY DID; AND HE DID NOT FORWARD THAT INFO TO ME. SUGGEST PULLING THE PHONE TAPES TO SEE IF THE CREW GAVE HIM THAT INFO. DEPENDING ON WHAT HAPPENED; MAKE SURE ALL INFO PERTAINING TO DISCREPANCY BE GIVEN TO ALL PERSONS INVOLVED IN THE DEFERRAL.

Data retrieved from NASA's ASRS site as of May 2009 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.

A lead mechanic reports on miscommunication between himself and an outstation mechanic regarding flight crew log write-up; #1 navigation failed. Item deferred. Maintenance base later found essential avionics circuit breaker tripped on saab 340B aircraft.