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The pilot of a KIS4 experimental aircraft noted a considerable shimmy from the nose landing gear after landing. When he arrived at the hangar and inspected the nose wheel he discovered that a failed exhaust pipe had been directing hot gases onto the nose wheel assembly; causing a partial failure.
| Attributes | |
| ACN | 1077243 |
| Time | |
| Date | 201303 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Amateur/Home Built/Experimental |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Landing |
| Route In Use | None |
| Flight Plan | None |
| Component | |
| Aircraft Component | Exhaust Pipe |
| Person 1 | |
| Function | Pilot Flying Single Pilot |
| Qualification | Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 30 Flight Crew Total 2050 Flight Crew Type 580 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
After completing 2 touch and go landings; I landed and the nose wheel gave me an extremely hard shimmy. After the airplane came to a complete halt I taxied to the hangar without further shimmy and inspected the nose wheel. I found that one of the exhaust pipes had broken about 9' from the tip inside the cowling. The ensuing hot gasses were blowing directly on an h-bracket in the nose wheel assembly weakening it causing it to partially fail. This partial failure caused the nose wheel not to track properly upon landing causing the extreme shimmy I felt. I contacted ground control and advised them of what happened in case the missing piece was still on the runway. Except for the extreme shimmy on landing I did not feel anything different in the airplane handling. I do remember the airplane had a slight shimmy during the previous touch and go landings; but nothing out of the ordinary.
Original NASA ASRS Text
Title: The pilot of a KIS4 experimental aircraft noted a considerable shimmy from the nose landing gear after landing. When he arrived at the hangar and inspected the nose wheel he discovered that a failed exhaust pipe had been directing hot gases onto the nose wheel assembly; causing a partial failure.
Narrative: After completing 2 touch and go landings; I landed and the nose wheel gave me an extremely hard shimmy. After the airplane came to a complete halt I taxied to the hangar without further shimmy and inspected the nose wheel. I found that one of the exhaust pipes had broken about 9' from the tip inside the cowling. The ensuing hot gasses were blowing directly on an H-Bracket in the nose wheel assembly weakening it causing it to partially fail. This partial failure caused the nose wheel not to track properly upon landing causing the extreme shimmy I felt. I contacted Ground Control and advised them of what happened in case the missing piece was still on the runway. Except for the extreme shimmy on landing I did not feel anything different in the airplane handling. I do remember the airplane had a slight shimmy during the previous touch and go landings; but nothing out of the ordinary.
Data retrieved from NASA's ASRS site as of July 2013 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.