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Pilot of small transport turboprop reduced power for descent in IMC. Heavy rain and torque dropped to automatic feather. Pilot continued approach and landing at lgb.
| Attributes | |
| ACN | 198715 |
| Time | |
| Date | 199201 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lgb |
| State Reference | CA |
| Altitude | msl bound lower : 8500 msl bound upper : 8500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sna |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent : approach descent other landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 75 flight time total : 5200 flight time type : 1700 |
| ASRS Report | 198715 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other other : unspecified cockpit |
| Resolutory Action | none taken : insufficient time none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
While on vectors for the ILS 30 at long beach, descending through 8500 ft MSL I made a power reduction. At the moment of power reduction the right engine continued to lose power. When torque dropped below 200 ft/pounds the right propeller feathered. I waited about 15-30 seconds for possible start up. (Automatic ignition was on). Power did not return so I secured the right engine. At the time of the incident I was IMC, moderate to heavy rain, in a descent. Due to the workload I elected to secure the engine instead of trying an air start. After an uneventful landing I called my mechanic and it was determined that water had entered the P3 line filter causing the fuel control unit to go to min fuel flow engine start on the ground was normal and the filter checked out dry. No further problems.
Original NASA ASRS Text
Title: PLT OF SMT TURBOPROP REDUCED PWR FOR DSCNT IN IMC. HVY RAIN AND TORQUE DROPPED TO AUTO FEATHER. PLT CONTINUED APCH AND LNDG AT LGB.
Narrative: WHILE ON VECTORS FOR THE ILS 30 AT LONG BEACH, DSNDING THROUGH 8500 FT MSL I MADE A PWR REDUCTION. AT THE MOMENT OF PWR REDUCTION THE R ENG CONTINUED TO LOSE PWR. WHEN TORQUE DROPPED BELOW 200 FT/POUNDS THE R PROP FEATHERED. I WAITED ABOUT 15-30 SECONDS FOR POSSIBLE START UP. (AUTO IGNITION WAS ON). PWR DID NOT RETURN SO I SECURED THE R ENG. AT THE TIME OF THE INCIDENT I WAS IMC, MODERATE TO HVY RAIN, IN A DSCNT. DUE TO THE WORKLOAD I ELECTED TO SECURE THE ENG INSTEAD OF TRYING AN AIR START. AFTER AN UNEVENTFUL LNDG I CALLED MY MECH AND IT WAS DETERMINED THAT WATER HAD ENTERED THE P3 LINE FILTER CAUSING THE FUEL CTL UNIT TO GO TO MIN FUEL FLOW ENG START ON THE GND WAS NORMAL AND THE FILTER CHKED OUT DRY. NO FURTHER PROBLEMS.
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.