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High torque remained on right engine when throttles retarded for landing. Flight crew elected to go around, shut down right engine, returned landed.
| Attributes | |
| ACN | 126595 |
| Time | |
| Date | 198910 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : sfo |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : sfo |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent other landing : go around landing other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 100 flight time total : 5800 flight time type : 100 |
| ASRS Report | 126595 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 13400 flight time type : 80 |
| ASRS Report | 126594 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On visual approach at sfo runway 28L when throttles were retarded for landing, I noticed aircraft yaw, then observed that right torque gauge read 1000 pounds torque cross checked with right N1 gauge it read 90 percent N1. Executed a go-around advised tower of the problem. Then once in level flight downwind analyzed problem and shut down right engine and secured right engine. Made single engine approach and landing. Maintenance is correcting problem, aircraft was grounded. All procedures were executed as per operations manual and aircraft flight standards manual.
Original NASA ASRS Text
Title: HIGH TORQUE REMAINED ON RIGHT ENGINE WHEN THROTTLES RETARDED FOR LNDG. FLT CREW ELECTED TO GO AROUND, SHUT DOWN RIGHT ENGINE, RETURNED LANDED.
Narrative: ON VISUAL APCH AT SFO RWY 28L WHEN THROTTLES WERE RETARDED FOR LNDG, I NOTICED ACFT YAW, THEN OBSERVED THAT RIGHT TORQUE GAUGE READ 1000 LBS TORQUE CROSS CHECKED WITH RIGHT N1 GAUGE IT READ 90 PERCENT N1. EXECUTED A GO-AROUND ADVISED TWR OF THE PROBLEM. THEN ONCE IN LEVEL FLT DOWNWIND ANALYZED PROBLEM AND SHUT DOWN RIGHT ENGINE AND SECURED RIGHT ENGINE. MADE SINGLE ENGINE APCH AND LNDG. MAINT IS CORRECTING PROBLEM, ACFT WAS GNDED. ALL PROCS WERE EXECUTED AS PER OPS MANUAL AND ACFT FLT STANDARDS MANUAL.
Data retrieved from NASA's ASRS site as of August 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.