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Aircraft record

N4026G1978 Hiller UH-12E

DeregisteredUnclaimedSource: FAA, updated Oct 17, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Jul 12, 2017.

Safety record in brief:2 NTSB accidents (substantial damage at worst, latest Oct 1989)2 ADs may apply

Registration
Deregistered
Last based in
Coalinga, CA
owner city / state
Owners
1
since 1988
NTSB events
2
substantial, 1989
ADs may apply
2
confirm with A&P
Service reports
0
since 1995

Registration

FAA Aircraft Registry · Oct 17, 2026
Last registered owner
Individual owner
City, state
Coalinga, CA
Certificate issued
Sep 30, 1988
Canceled
Jul 12, 2017
Airworthiness
Multiple · Standard, Restricted, Agriculture and Pest Control
Airworthiness date
Aug 2, 1978

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
Hiller
Model
UH-12E
Year
1978
Serial number
5049
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
4
Engines
1
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
4H11
Mode S code
A4B740

Engine

Make and model
Lycoming Vo-540 Series
Type
Reciprocating
Power
310 hp

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 1988 – 2017Individual ownerCoalinga, CA
  2. 1968 – 1970Flight Safety INCEast Farmingdale, NY · different airframe: Bell 206a S/N 188

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 17, 2026 · SDRs · Oct 16, 2026

NTSB events (2)

Accident · substantial damage

Oct 16, 1989 · Huron, CA

THE PILOT FAILED TO PROPERLY PREFLIGHT THE AIRPLANE BEFORE DEPARTING ON THE ACCIDENT FLIGHT AND MISJUDGED THE FLARE DURING THE ENSUING AUTOROTATION. FACTORS RELATING TO THIS ACCIDENT WERE OIL STARVATION AND TOTAL FAILURE OF THE CONNECTING ROD.

Damage
Substantial
Injuries
Serious
Report
LAX90DVA01

From NTSB records; matched by serial number.Read NTSB report (search CAROL for LAX90DVA01)

Accident · substantial damage

Oct 10, 1983 · Los Banos, CA

THE PLT LOADED THE HELICOPTER & STARTED A SPRAYING OPERATION. HE STATED THAT AS HE PULLED THE HELICOPTER UP FROM THE 1ST SPRAY RUN, IT STARTED SHAKING & WENT PARTIALLY OUT OF CONTROL. HE WAS ABLE TO REGAIN ENOUGH CONTROL TO GET THE HELICOPTER IN LEVEL FLT BEFORE IT STRUCK THE GROUND & WAS DAMAGED. NO PREIMPACT DISCREPANCIES WERE FOUND WHICH WOULD HAVE CONTRIBUTED TO THE ACCIDENT.

Damage
Substantial
Injuries
None
Report
LAX84LA010

From NTSB records; matched by serial number.Read NTSB report (search CAROL for LAX84LA010)

Accident history for this model

ADs published since 1998 that may apply (2)

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.

ADSubjectEffectiveApplies to
97-20-15Hiller Aircraft Corporation Model UH- 12A, UH-12B, UH-12C, UH-12D, and UH-12E HelicoptersNov 12, 1997Airframe (UH-12E)
97-10-16Hiller Aircraft Corporation Model UH- 12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E…Jun 27, 1997Airframe (UH-12E)Only with: Having control rotor blade spar tube P/N 36003, 36006, 36129, 36129-25, 36203, 36203-15, 36203-21, or 36209-3, or cuff P/N 36101-1, 36101-4, 36108, 36115-1, 36115-4, 36115-6, 36115-8, or 36124 installed; includes UH-12D and UH-12E converted to turbine power per STC SH177WE and SH178WE.

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (0)

No Service Difficulty Reports found for this airframe since 1995.

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 17, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 17, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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