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An air carrier DC9-30 flight crew did not get a green landing gear (down and locked) indication on the l-hand main landing gear. The flight crew used the mid cabin landing gear viewer to confirm that the left gear was safe and then made a normal landing.
| Attributes | |
| ACN | 324910 |
| Time | |
| Date | 199601 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : syr |
| State Reference | NY |
| Altitude | agl bound lower : 1500 agl bound upper : 1500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : syr |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 10000 flight time type : 3600 |
| ASRS Report | 324910 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 15300 flight time type : 2800 |
| ASRS Report | 324909 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Extended landing gear on approach. Left main gear did not indicate down (no green light), red 'unlock light' was not on -- conflicting indications. Went through abnormal procedures, recycled gear with no change. Observed main gear through viewer in floor, down lock indicated normal. We landed uneventfully. Gear position switch on strut found to be defective.
Original NASA ASRS Text
Title: AN ACR DC9-30 FLC DID NOT GET A GREEN LNDG GEAR (DOWN AND LOCKED) INDICATION ON THE L-HAND MAIN LNDG GEAR. THE FLC USED THE MID CABIN LNDG GEAR VIEWER TO CONFIRM THAT THE L GEAR WAS SAFE AND THEN MADE A NORMAL LNDG.
Narrative: EXTENDED LNDG GEAR ON APCH. L MAIN GEAR DID NOT INDICATE DOWN (NO GREEN LIGHT), RED 'UNLOCK LIGHT' WAS NOT ON -- CONFLICTING INDICATIONS. WENT THROUGH ABNORMAL PROCS, RECYCLED GEAR WITH NO CHANGE. OBSERVED MAIN GEAR THROUGH VIEWER IN FLOOR, DOWN LOCK INDICATED NORMAL. WE LANDED UNEVENTFULLY. GEAR POS SWITCH ON STRUT FOUND TO BE DEFECTIVE.
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.