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A DC3 on taxiing to the runup area struck a taxiway sign while turning incurring damage to the propeller. Caused by the failure of the tailwheel to unlock during the turn.
| Attributes | |
| ACN | 403000 |
| Time | |
| Date | 199805 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bfi |
| State Reference | WA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air taxi |
| Make Model Name | DC-3/Dakota/Skytrain |
| Operating Under FAR Part | Part 135 |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 3880 flight time type : 33 |
| ASRS Report | 403000 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : ground |
| Qualification | controller : non radar |
| Events | |
| Anomaly | aircraft equipment problem : critical conflict : ground less severe non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
I pulled up to the runup area at A1, turning into the wind and locking the tailwheel for the runup. I noticed the sign when I approached the area. After the turn, however, it was hidden by the cowl and associated aircraft structure. The airplane would turn only slightly to the left. I thought that I had enough room to clear the sign, but in fact struck it with the propeller. On further investigation, I think the tailwheel did not release due to a side load on the locking pin. After exiting the aircraft I examined the tailwheel. It appeared to be held straight even though the cockpit release was out (unlocked).
Original NASA ASRS Text
Title: A DC3 ON TAXIING TO THE RUNUP AREA STRUCK A TXWY SIGN WHILE TURNING INCURRING DAMAGE TO THE PROP. CAUSED BY THE FAILURE OF THE TAILWHEEL TO UNLOCK DURING THE TURN.
Narrative: I PULLED UP TO THE RUNUP AREA AT A1, TURNING INTO THE WIND AND LOCKING THE TAILWHEEL FOR THE RUNUP. I NOTICED THE SIGN WHEN I APCHED THE AREA. AFTER THE TURN, HOWEVER, IT WAS HIDDEN BY THE COWL AND ASSOCIATED ACFT STRUCTURE. THE AIRPLANE WOULD TURN ONLY SLIGHTLY TO THE L. I THOUGHT THAT I HAD ENOUGH ROOM TO CLR THE SIGN, BUT IN FACT STRUCK IT WITH THE PROP. ON FURTHER INVESTIGATION, I THINK THE TAILWHEEL DID NOT RELEASE DUE TO A SIDE LOAD ON THE LOCKING PIN. AFTER EXITING THE ACFT I EXAMINED THE TAILWHEEL. IT APPEARED TO BE HELD STRAIGHT EVEN THOUGH THE COCKPIT RELEASE WAS OUT (UNLOCKED).
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.