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A saab 340 on approach at 2600 ft shut down #1 engine, due to propeller surging and loss of propeller control. Cause unknown.
| Attributes | |
| ACN | 485175 |
| Time | |
| Date | 200009 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : hts.airport |
| State Reference | WV |
| Altitude | msl single value : 2600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : hts.tower tower : ewr.tower |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 120 flight time total : 5000 flight time type : 500 |
| ASRS Report | 485175 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 2080 flight time type : 300 |
| ASRS Report | 484606 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : insufficient time |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication |
| Primary Problem | Aircraft |
Narrative:
During cruise flight, I (PNF) noticed the left propeller oil pressure was pegged at full scale (red line). The captain (PF) called for the appropriate checklist. The QRH (emergency QRH) action items and explanations indicated that the difficulty was a gauge problem. The QRH recommended that the engine indications should be monitored and a shutdown procedure applied if fluctuations in indications or propeller RPM occurred. During a visual approach to the destination airport, the left propeller began surging. The in-flight shutdown procedure was applied and the propeller feathered. Due to the proximity of the airport and an imminent landing, we elected to continue rather than climb back into the overcast in order to accomplish numerous engine failure checklists and brief the flight attendant and passenger. The aircraft was within 1 min of landing at this time. In addition, we did not declare an emergency. I advised the tower of our situation. The landing and rollout was uneventful.
Original NASA ASRS Text
Title: A SAAB 340 ON APCH AT 2600 FT SHUT DOWN #1 ENG, DUE TO PROP SURGING AND LOSS OF PROP CTL. CAUSE UNKNOWN.
Narrative: DURING CRUISE FLT, I (PNF) NOTICED THE L PROP OIL PRESSURE WAS PEGGED AT FULL SCALE (RED LINE). THE CAPT (PF) CALLED FOR THE APPROPRIATE CHKLIST. THE QRH (EMER QRH) ACTION ITEMS AND EXPLANATIONS INDICATED THAT THE DIFFICULTY WAS A GAUGE PROB. THE QRH RECOMMENDED THAT THE ENG INDICATIONS SHOULD BE MONITORED AND A SHUTDOWN PROC APPLIED IF FLUCTUATIONS IN INDICATIONS OR PROP RPM OCCURRED. DURING A VISUAL APCH TO THE DEST ARPT, THE L PROP BEGAN SURGING. THE INFLT SHUTDOWN PROC WAS APPLIED AND THE PROP FEATHERED. DUE TO THE PROX OF THE ARPT AND AN IMMINENT LNDG, WE ELECTED TO CONTINUE RATHER THAN CLB BACK INTO THE OVCST IN ORDER TO ACCOMPLISH NUMEROUS ENG FAILURE CHKLISTS AND BRIEF THE FLT ATTENDANT AND PAX. THE ACFT WAS WITHIN 1 MIN OF LNDG AT THIS TIME. IN ADDITION, WE DID NOT DECLARE AN EMER. I ADVISED THE TWR OF OUR SIT. THE LNDG AND ROLLOUT WAS UNEVENTFUL.
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.