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An MD88 on flight from ZZZ to lax #1 engine reported using 8 quarts of oil in 5 hours. Management alleges oil filler cap not secured at ZZZ after service.
| Attributes | |
| ACN | 441444 |
| Time | |
| Date | 199906 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 3 |
| ASRS Report | 441444 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : oil quantity indicator |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Aircraft |
Narrative:
I was asked to do a transit check on aircraft xyz, which included servicing of oils. I added oil to the #1 engine and closed the cowling and signed the logbook. I was informed the next day that aircraft xyz lost oil on the way to lax from ZZZ. It is possible that the oil cap for the main oil tank had a damaged o-ring or was improperly installed, or was defective. Callback conversation with reporter revealed the following information: the reporter stated the #1 engine was svced to full 16 quarts and the cap was secured. The reporter said the engine operated for approximately 5 hours and used 8 quarts of oil. The reporter said he was informed the engine lost the oil and allegations have been made that the cap was not secure when departing ZZZ. The reporter stated if the cap was off or not locked the engine oil would have been lost completely within 30 mins.
Original NASA ASRS Text
Title: AN MD88 ON FLT FROM ZZZ TO LAX #1 ENG RPTED USING 8 QUARTS OF OIL IN 5 HRS. MGMNT ALLEGES OIL FILLER CAP NOT SECURED AT ZZZ AFTER SVC.
Narrative: I WAS ASKED TO DO A TRANSIT CHK ON ACFT XYZ, WHICH INCLUDED SVCING OF OILS. I ADDED OIL TO THE #1 ENG AND CLOSED THE COWLING AND SIGNED THE LOGBOOK. I WAS INFORMED THE NEXT DAY THAT ACFT XYZ LOST OIL ON THE WAY TO LAX FROM ZZZ. IT IS POSSIBLE THAT THE OIL CAP FOR THE MAIN OIL TANK HAD A DAMAGED O-RING OR WAS IMPROPERLY INSTALLED, OR WAS DEFECTIVE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE #1 ENG WAS SVCED TO FULL 16 QUARTS AND THE CAP WAS SECURED. THE RPTR SAID THE ENG OPERATED FOR APPROX 5 HRS AND USED 8 QUARTS OF OIL. THE RPTR SAID HE WAS INFORMED THE ENG LOST THE OIL AND ALLEGATIONS HAVE BEEN MADE THAT THE CAP WAS NOT SECURE WHEN DEPARTING ZZZ. THE RPTR STATED IF THE CAP WAS OFF OR NOT LOCKED THE ENG OIL WOULD HAVE BEEN LOST COMPLETELY WITHIN 30 MINS.
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.