We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.
Airframe & engine
FAA Registry + type data
Airframe
Manufacturer
Enstrom
Model
F-28C
Serial number
375
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
3
Engines
1
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
H1CE
Mode S code
A77697
Engine
Type
Reciprocating
Total time and engine hours aren't public. They appear here once the owner adds logbooks.
Ownership history
Ownership history from FAA records
1983 – 2013Copters Unlimited INCLaconia, NH
Individual owners are shown by city and state only.
Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 18, 2026 · SDRs · Oct 16, 2026
NTSB events (2)
Accident · substantial damage
Jun 5, 1992 · Malvern, PA
THE PILOT ABRUPTLY MOVED THE CYCLIC REARWARD WHICH RESULTED IN THE MAIN ROTOR BLADES STRIKING AND SEPARATING THE TAIL BOOM. A FACTOR IN THIS ACCIDENT WAS THE SOFT MUDDY FIELD.
THE INSTRUCTOR PILOT STATED THAT AFTER EXECUTING SEVERAL STRAIGHT-IN AND 180 DEGREE AUTOROTATIONS THEY DECIDED TO ATTEMPT SOME HOVERING AUTOROTATIONS. AFTER EXECUTING THE FIRST ONE SUCCESSFULLY IN A TAILWIND SITUATION, THE STUDENT INITIATED THE SECOND ONE, STILL DOWNWIND, FROM A STABILIZED 3 TO 5 FOOT HOVER. THE CFI STATED THAT THE NOSE OF THE HELICOPTER BEGAN TO PITCH DOWN VERY ABRUPTLY AND…
These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.
Airframe (F-28C)Only with: Helicopters with trim relay P/N KUP14D55-24, KUP14D55-472, M83536/10-015M, or M83536/10-024M installed; does not apply to helicopters with reversible trim motor P/N 28-16621 or P/N AD1R-10.
Airframe (F-28C)Only with: Helicopters with a trim relay P/N KUP14D55-472, M83536/10-015M, or M83536/10-024M installed; does not apply to helicopters with reversible trim motor P/N 28-16621 or AD1R-10.