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A DC9-30 was dispatched and operated in non compliance with incorrect engine performance data. Engines were both JT8D-9. Aircraft placards showed engine intermix.
| Attributes | |
| ACN | 555255 |
| Time | |
| Date | 200207 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : cxy.tower |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 6 |
| ASRS Report | 555255 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 2 maintenance technician : 5.5 |
| ASRS Report | 555534 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure non adherence : company policies |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : engineering procedure performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | ENGINEERING ORDER |
Narrative:
Aircraft was intermixed engines before 'C' check (-7 engine and -9 engines). Aircraft came out of 'C' check de-intermixed (both engines -9). I work in maintenance control, and was never notified of the change. The engineering order (engineering authority/authorized) has a step to notify maintenance control of the change. That is the procedure and maintenance control was never notified of the change. The crew on 07/wed/02 noticed 2 of 4 cockpit placards missing and questioned maintenance control of possible de-intermix. That's where the aircraft was grounded by me until problem with paperwork and ram air temperature indicator were resolved.
Original NASA ASRS Text
Title: A DC9-30 WAS DISPATCHED AND OPERATED IN NON COMPLIANCE WITH INCORRECT ENG PERFORMANCE DATA. ENGS WERE BOTH JT8D-9. ACFT PLACARDS SHOWED ENG INTERMIX.
Narrative: ACFT WAS INTERMIXED ENGS BEFORE 'C' CHK (-7 ENG AND -9 ENGS). ACFT CAME OUT OF 'C' CHK DE-INTERMIXED (BOTH ENGS -9). I WORK IN MAINT CTL, AND WAS NEVER NOTIFIED OF THE CHANGE. THE ENGINEERING ORDER (ENGINEERING AUTH) HAS A STEP TO NOTIFY MAINT CTL OF THE CHANGE. THAT IS THE PROC AND MAINT CTL WAS NEVER NOTIFIED OF THE CHANGE. THE CREW ON 07/WED/02 NOTICED 2 OF 4 COCKPIT PLACARDS MISSING AND QUESTIONED MAINT CTL OF POSSIBLE DE-INTERMIX. THAT'S WHERE THE ACFT WAS GNDED BY ME UNTIL PROB WITH PAPERWORK AND RAM AIR TEMP INDICATOR WERE RESOLVED.
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.