A learjet 55 was operated for 26 hours over the required 150-300 hour engine inspection.

Attributes
ACN	545004
Time
Date	200204
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Dusk
Aircraft 1
Controlling Facilities	tower : dfw.tower
Operator	general aviation : corporate
Make Model Name	Learjet 55
Flight Phase	ground : maintenance
Person 1
Affiliation	company : corporate
Function	maintenance : inspector
Qualification	technician : powerplant technician : airframe
Experience	maintenance lead technician : 4 maintenance supervisor : 15 maintenance technician : 6
ASRS Report	545004
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : person
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : work cards performance deficiency : inspection performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Company
Primary Problem	Company

Narrative:

We were using a maintenance tracking program by learjet called 'cimms.' we send in reports of flight time, and they send back a date due list and work cards. Last month (03/02) they sent us no work cards for the coming engine inspection, but did have it on their due list. We overlooked the date due list and waited for the work cards -- bad idea, as our flying increased greatly and we over flew our 150-300 hour inspection by 26.2 hours. This was caught on the evening of 04/sun/02 while the plane was en route from ZZZ1 to ZZZ2. I had come in to postflt the aircraft for a monday morning departure. I was reviewing date due lists while waiting for the arrival. We immediately completed the inspection with no defects prior to its next departure. We now have an update maintenance due board on the wall that not only gives the next due inspection (we have had the inspection board for a while) but now it shows the hours left till next inspection, and every month 3 separate people will review the due list and sign off as to what is due and when it is due, so that this mistake does not happen again.

Original NASA ASRS Text

Title: A LEARJET 55 WAS OPERATED FOR 26 HRS OVER THE REQUIRED 150-300 HR ENG INSPECTION.

Narrative: WE WERE USING A MAINT TRACKING PROGRAM BY LEARJET CALLED 'CIMMS.' WE SEND IN RPTS OF FLT TIME, AND THEY SEND BACK A DATE DUE LIST AND WORK CARDS. LAST MONTH (03/02) THEY SENT US NO WORK CARDS FOR THE COMING ENG INSPECTION, BUT DID HAVE IT ON THEIR DUE LIST. WE OVERLOOKED THE DATE DUE LIST AND WAITED FOR THE WORK CARDS -- BAD IDEA, AS OUR FLYING INCREASED GREATLY AND WE OVER FLEW OUR 150-300 HR INSPECTION BY 26.2 HRS. THIS WAS CAUGHT ON THE EVENING OF 04/SUN/02 WHILE THE PLANE WAS ENRTE FROM ZZZ1 TO ZZZ2. I HAD COME IN TO POSTFLT THE ACFT FOR A MONDAY MORNING DEP. I WAS REVIEWING DATE DUE LISTS WHILE WAITING FOR THE ARR. WE IMMEDIATELY COMPLETED THE INSPECTION WITH NO DEFECTS PRIOR TO ITS NEXT DEP. WE NOW HAVE AN UPDATE MAINT DUE BOARD ON THE WALL THAT NOT ONLY GIVES THE NEXT DUE INSPECTION (WE HAVE HAD THE INSPECTION BOARD FOR A WHILE) BUT NOW IT SHOWS THE HRS LEFT TILL NEXT INSPECTION, AND EVERY MONTH 3 SEPARATE PEOPLE WILL REVIEW THE DUE LIST AND SIGN OFF AS TO WHAT IS DUE AND WHEN IT IS DUE, SO THAT THIS MISTAKE DOES NOT HAPPEN AGAIN.

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.