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N9991F

Cancelled 1988

Deregistered aircraft · Helio HST-550A

Open in FAA registry

Cancelled: August 26, 1988
Status when cancelled: N-number assigned, not yet registered
Serial number: 004
Type: Fixed wing single engine
Mode S code: ADF693

Airframe modelHelio HST-550ATCDS A4EA · ADs, bulletins and aircraft registered now

From the FAA registry file of November 4, 2026, cancelled registrations. Owners’ street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

NTSB investigations · 1

Matched to this aircraft by N9991F and the event date: up to this one’s cancellation.

NTSB LAX88FA241Accident · 1 fatalField investigationFinal reportPerris, CAFailure of the electrical stabilizer trim control that resulted in an uncommanded full nose down elevator trim command.Jun 30, 1988 · Destroyed

FAA incident reports · 2

FAA accident and incident reports matched to this aircraft by N9991F and the event date: up to this one’s cancellation.

Accident 19880630027299ADescent · Perris, CAPitch trim in full down position after dropping skydivers. No time to parachute.Jun 30, 1988 · Destroyed · 1 fatal Incident 19870821062539IParachute Jumping · Davis, CAMain chute failed to open after free fall. Reserve deployed too late. Chutist impacted the ground.Aug 21, 1987 · 1 fatal