# Accident 20260430003599A: Hiller UH-12E, Chickasha, OK, April 30, 2026

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 30, 2026, 17:30 local time
- Place: Chickasha, OK
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: Agricultural (Part 137)
- Operator: 5PVG
- Location: 34.9817° N, 97.9739° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=34.9817&lon=-97.9739&mi=10
- Aircraft: N22SP, registered now (https://openairdocs.org/aircraft/N22SP) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Registry engine: Lycoming VO-540-C2A (registry code 42244, https://openairdocs.org/engine/lycoming-vo-540-c2a) (OpenAirDocs)
- Reported make and model: HILLER UH-12E
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot
- Pilot flight hours: 5,600 total
- NTSB investigation: [NTSB CEN26LA175](https://openairdocs.org/ntsb/CEN26LA175) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20260430003599A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON APRIL 30, 2026, AT APPROXIMATELY 1730 A ^PRIVACY DATA OMITTED^ HELICOPTER WAS TRAVERSING BETWEEN FIELDS WHERE IT WAS SPRAYING AGRICULTURAL PRODUCTS, WHEN THE PILOT WITNESSED A PART SLING AWAY FROM ABOVE THE CANOPY OUT AND AWAY TO THE RIGHT FRONT QUARTER OF THE AIRCRAFT. THIS WAS FOLLOWED BY AN EXTREME VIBRATION IN THE CYCLIC, WHICH CAUSED THE PILOT TO ELECT TO MAKE AN EMERGENCY LANDING. THE LANDING WAS SUCCESSFUL BUT CAUSED THE ROTOR HEAD TO SLAP DOWN AGAINST THE TAIL BOOM PARTIALLY SHEARING THE BOOM AND CAUSING ADDITIONAL DAMAGE TO ACCOMPANYING COMPONENTS. THE PILOT SUSTAINED NO INJURIES AND THERE WAS NO POST LANDING FIRE. WEATHER CONDITIONS: WINDS FROM THE EAST, NORTH-EAST AT 9 KNOTS, SCATTERED CLOUDS AT 12,000 FEET, VISIBILITY 10+ MILES. A SHEARED “CONTROL ROTOR CUFF AND TRUNNION ASSEMBLY” WAS FOUND APPROXIMATELY 100 YARDS BEHIND AND TO THE RIGHT OF WHERE THE AIRCRAFT LANDED.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN26LA175](https://openairdocs.org/ntsb/CEN26LA175), Apr 30, 2026: Hiller UH-12E (N22SP), Chickasha, OK, substantial damage, investigation ongoing

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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