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A piper PA44 experienced landing gear position indication failure. Fly by tower appeared landing gear down. On touchdown position indication normal.
| Attributes | |
| ACN | 517595 |
| Time | |
| Date | 200107 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower tower : bfi.tower |
| Operator | general aviation : instructional |
| Make Model Name | PA-44 Seminole Turbo Seminole |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor maintenance : technician |
| Qualification | pilot : cfi technician : powerplant |
| ASRS Report | 527595 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : trainee |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : no gear position lights other flight crewa |
| Resolutory Action | controller : issued advisory flight crew : landed in emergency condition flight crew : declared emergency |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
We didn't get all the landing gear indicator lights to come on. We tried to troubleshoot and to release the emergency gear. Had to pass by the tower to have them check if gear was down. The tower said they appeared to be down and we landed. The emergency crew was put on alert. When we touched down, the 3 indicator light came on. I believe the problem was with the sensor in the down limit switch. The plane was put into maintenance.
Original NASA ASRS Text
Title: A PIPER PA44 EXPERIENCED LNDG GEAR POS INDICATION FAILURE. FLY BY TWR APPEARED LNDG GEAR DOWN. ON TOUCHDOWN POS INDICATION NORMAL.
Narrative: WE DIDN'T GET ALL THE LNDG GEAR INDICATOR LIGHTS TO COME ON. WE TRIED TO TROUBLESHOOT AND TO RELEASE THE EMER GEAR. HAD TO PASS BY THE TWR TO HAVE THEM CHK IF GEAR WAS DOWN. THE TWR SAID THEY APPEARED TO BE DOWN AND WE LANDED. THE EMER CREW WAS PUT ON ALERT. WHEN WE TOUCHED DOWN, THE 3 INDICATOR LIGHT CAME ON. I BELIEVE THE PROB WAS WITH THE SENSOR IN THE DOWN LIMIT SWITCH. THE PLANE WAS PUT INTO MAINT.
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.