 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
MD80 crew went around when gear did not lock down. Hydraulic system not operated properly and was not discovered with descent checklist.
| Attributes | |
| ACN | 443881 |
| Time | |
| Date | 199907 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sea.airport |
| State Reference | WA |
| Altitude | msl bound lower : 1800 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : s46.tracon tower : sea.tower tower : lax.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 15000 flight time type : 2000 |
| ASRS Report | 443881 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : company policies non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : gear warning |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency flight crew : executed go around |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
On approach to sea, had unsafe landing gear indication (nose gear not down and locked). Executed go around. Declared emergency. During checklist procedure discovered that first officer had inadvertently left hydraulic system in 'low and off' instead of correct 'hi and on.' with switches in proper position, gear extended normally. I advised ATC that we were no longer in an emergency situation and we returned for an uneventful landing. We had run the descent checklist prior to top of descent, but the first officer had not confirmed correct switch position for the hydraulic system.
Original NASA ASRS Text
Title: MD80 CREW WENT AROUND WHEN GEAR DID NOT LOCK DOWN. HYD SYS NOT OPERATED PROPERLY AND WAS NOT DISCOVERED WITH DSCNT CHKLIST.
Narrative: ON APCH TO SEA, HAD UNSAFE LNDG GEAR INDICATION (NOSE GEAR NOT DOWN AND LOCKED). EXECUTED GAR. DECLARED EMER. DURING CHKLIST PROC DISCOVERED THAT FO HAD INADVERTENTLY LEFT HYD SYS IN 'LOW AND OFF' INSTEAD OF CORRECT 'HI AND ON.' WITH SWITCHES IN PROPER POS, GEAR EXTENDED NORMALLY. I ADVISED ATC THAT WE WERE NO LONGER IN AN EMER SIT AND WE RETURNED FOR AN UNEVENTFUL LNDG. WE HAD RUN THE DSCNT CHKLIST PRIOR TO TOP OF DSCNT, BUT THE FO HAD NOT CONFIRMED CORRECT SWITCH POS FOR THE HYD SYS.
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.