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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A light fixed wing aircraft in aerobatic maneuver at 2000 ft declared an emergency and diverted due to partial loss of engine oil caused by an unsecured oil quantity dipstick.
| Attributes | |
| ACN | 431745 |
| Time | |
| Date | 199903 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : tcm.airport |
| State Reference | WA |
| Altitude | agl single value : 2000 |
| Environment | |
| Flight Conditions | VMC VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 25 flight time total : 25000 flight time type : 450 |
| ASRS Report | 431745 |
| Person 2 | |
| Affiliation | government : military |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : diverted to another airport |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : inspection performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Lost about 2 quarts of engine oil during negative 'G' maneuver. Oil covered the canopy, limiting visibility. Declared an emergency with mcchord AFB tower, but landed at gray army airfield, as it was closer. Discovered oil dipstick loose, but not out of filler tube. I had just completed annual. When I buttoned up the cowl, I saw the dipstick in place, and it appeared fully seated, however, I did not check to verify its security.
Original NASA ASRS Text
Title: A LIGHT FIXED WING ACFT IN AEROBATIC MANEUVER AT 2000 FT DECLARED AN EMER AND DIVERTED DUE TO PARTIAL LOSS OF ENG OIL CAUSED BY AN UNSECURED OIL QUANTITY DIPSTICK.
Narrative: LOST ABOUT 2 QUARTS OF ENG OIL DURING NEGATIVE 'G' MANEUVER. OIL COVERED THE CANOPY, LIMITING VISIBILITY. DECLARED AN EMER WITH MCCHORD AFB TWR, BUT LANDED AT GRAY ARMY AIRFIELD, AS IT WAS CLOSER. DISCOVERED OIL DIPSTICK LOOSE, BUT NOT OUT OF FILLER TUBE. I HAD JUST COMPLETED ANNUAL. WHEN I BUTTONED UP THE COWL, I SAW THE DIPSTICK IN PLACE, AND IT APPEARED FULLY SEATED, HOWEVER, I DID NOT CHK TO VERIFY ITS SECURITY.
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.