Light transport commuter flight crew flies aircraft with incorrect maintenance sign off.

Attributes
ACN	286495
Time
Date	199410
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pit
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	ground : preflight other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 255 flight time total : 9100 flight time type : 5700
ASRS Report	286495
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : published procedure
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

New procedures regarding maintenance write-ups have been implemented which are still ambiguous. As a captain, I flew aircraft X for 7 legs after being quick swapped out of aircraft Y (because pressurization inoperative) prior to the 1ST leg. I was the 2ND captain to fly that plane on aug/xx/94 and the abbreviated checklist was utilized since the 1ST crew is supposed to do the expanded checklist. On oct/xx/94 I flew aircraft X for 1 leg returning to pit and was swapped out of aircraft X. Later in the day, I was informed that maintenance had failed to properly sign-off a write-up for low oxygen (passenger cabin) 3 days prior to when I flew it. Subsequent pages attesting to maintenance compliance with airworthiness directives had been met and were properly signed. I have not been able to determine exactly how many days had elapsed and how many crews (suspect 2) have flown this plane prior to me since the maintenance logbook was replaced and the one affecting me was sent to the corporation offices.

Original NASA ASRS Text

Title: LTT COMMUTER FLC FLIES ACFT WITH INCORRECT MAINT SIGN OFF.

Narrative: NEW PROCS REGARDING MAINT WRITE-UPS HAVE BEEN IMPLEMENTED WHICH ARE STILL AMBIGUOUS. AS A CAPT, I FLEW ACFT X FOR 7 LEGS AFTER BEING QUICK SWAPPED OUT OF ACFT Y (BECAUSE PRESSURIZATION INOP) PRIOR TO THE 1ST LEG. I WAS THE 2ND CAPT TO FLY THAT PLANE ON AUG/XX/94 AND THE ABBREVIATED CHKLIST WAS UTILIZED SINCE THE 1ST CREW IS SUPPOSED TO DO THE EXPANDED CHKLIST. ON OCT/XX/94 I FLEW ACFT X FOR 1 LEG RETURNING TO PIT AND WAS SWAPPED OUT OF ACFT X. LATER IN THE DAY, I WAS INFORMED THAT MAINT HAD FAILED TO PROPERLY SIGN-OFF A WRITE-UP FOR LOW OXYGEN (PAX CABIN) 3 DAYS PRIOR TO WHEN I FLEW IT. SUBSEQUENT PAGES ATTESTING TO MAINT COMPLIANCE WITH AIRWORTHINESS DIRECTIVES HAD BEEN MET AND WERE PROPERLY SIGNED. I HAVE NOT BEEN ABLE TO DETERMINE EXACTLY HOW MANY DAYS HAD ELAPSED AND HOW MANY CREWS (SUSPECT 2) HAVE FLOWN THIS PLANE PRIOR TO ME SINCE THE MAINT LOGBOOK WAS REPLACED AND THE ONE AFFECTING ME WAS SENT TO THE CORPORATION OFFICES.

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.