20260430003599A

Accident · Substantial damage

FAA accident report · Hiller UH-12E · Chickasha, OK · April 30, 2026

Date
April 30, 2026 · 17:30 local
Place
Chickasha, OK
Phase of flight
Cruise/Level Flight
Operating rules
Agricultural (Part 137)
Operator
5PVG
Damage
Substantial damage
Aircraft
N22SP
NTSB investigation
NTSBCEN26LA175
Reported as
Hiller UH-12E
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Commercial pilot
Pilot’s flight hours
5,600 total

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

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.

As the FAA filed it

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.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.