A B737-300 seat breakover bolt incorrect substitute installed.

Attributes
ACN	344995
Time
Date	199608
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	344995
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Through-flight aircraft arrived on gate and had several maintenance write-ups. Supervisor started working some while I worked other write-ups. 1 item was a broken passenger seat which required a new breakover bolt. We couldn't locate correct bolt in parts manuals, so we contacted maintenance control for correct or equivalent substitute. They gave us different part numbers since there are many different configns. We matched the broken bolt with a new bolt and installed new bolt. Later on, in talking to another mechanic, I realized old bolt might not have been correct bolt for effectivity of seats. I then immediately contacted my supervisor and explained new bolt might not be correct since old bolt used for identify was possibly incorrect. He then advised maintenance control to have new bolt verified for correct effectivity, and if found incorrect be replaced.

Original NASA ASRS Text

Title: A B737-300 SEAT BREAKOVER BOLT INCORRECT SUBSTITUTE INSTALLED.

Narrative: THROUGH-FLT ACFT ARRIVED ON GATE AND HAD SEVERAL MAINT WRITE-UPS. SUPVR STARTED WORKING SOME WHILE I WORKED OTHER WRITE-UPS. 1 ITEM WAS A BROKEN PAX SEAT WHICH REQUIRED A NEW BREAKOVER BOLT. WE COULDN'T LOCATE CORRECT BOLT IN PARTS MANUALS, SO WE CONTACTED MAINT CTL FOR CORRECT OR EQUIVALENT SUBSTITUTE. THEY GAVE US DIFFERENT PART NUMBERS SINCE THERE ARE MANY DIFFERENT CONFIGNS. WE MATCHED THE BROKEN BOLT WITH A NEW BOLT AND INSTALLED NEW BOLT. LATER ON, IN TALKING TO ANOTHER MECH, I REALIZED OLD BOLT MIGHT NOT HAVE BEEN CORRECT BOLT FOR EFFECTIVITY OF SEATS. I THEN IMMEDIATELY CONTACTED MY SUPVR AND EXPLAINED NEW BOLT MIGHT NOT BE CORRECT SINCE OLD BOLT USED FOR IDENT WAS POSSIBLY INCORRECT. HE THEN ADVISED MAINT CTL TO HAVE NEW BOLT VERIFIED FOR CORRECT EFFECTIVITY, AND IF FOUND INCORRECT BE REPLACED.

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.