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B737 flight crew reported an issue with the landing gear indicating light system that was traced to a popped circuit breaker. Flight crew surmised the popped breaker could have been caused by the shoulder harness.
| Attributes | |
| ACN | 1432205 |
| Time | |
| Date | 201703 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach Landing |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Landing Gear Indicating System |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 169 Flight Crew Type 10660 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 172 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
On approach at the FAF we lowered the gear but had no landing gear indication lights. With no time to trouble shoot; we elected a low approach while leaving the landing gear handle down and asking the tower to give us their opinion of our gear status. The tower confirmed what we believed. Our gear was in fact down. After the low approach and establishing ourselves on downwind we began an analysis and found [a] circuit breaker was popped.the first officer found the breaker and after a discussion that his shoulder harness may have popped the circuit breaker; I directed him to reset the breaker. We regained two of the three gear lights. However the left gear light remained extinguished. We swapped the right gear light for the left light and it illuminated down. So we swapped it back and replaced the bulbs in the left gear indicator. One of the bulbs illuminated in the left gear and we elected to land with no further incident.
Original NASA ASRS Text
Title: B737 flight crew reported an issue with the landing gear indicating light system that was traced to a popped circuit breaker. Flight crew surmised the popped breaker could have been caused by the shoulder harness.
Narrative: On approach at the FAF we lowered the gear but had no Landing Gear Indication lights. With no time to trouble shoot; we elected a low approach while leaving the landing gear handle down and asking the Tower to give us their opinion of our gear status. The Tower confirmed what we believed. Our gear was in fact down. After the low approach and establishing ourselves on downwind we began an analysis and found [a] circuit breaker was popped.The First Officer found the breaker and after a discussion that his shoulder harness may have popped the CB; I directed him to reset the breaker. We regained two of the three gear lights. However the left gear light remained extinguished. We swapped the right gear light for the left light and it illuminated down. So we swapped it back and replaced the bulbs in the left gear indicator. One of the bulbs illuminated in the left gear and we elected to land with no further incident.
Data retrieved from NASA's ASRS site 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.