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Aircraft record

N623621958 Hiller H-23D

DeregisteredUnclaimedSource: FAA, updated Oct 17, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Nov 12, 2014.

Safety record in brief:1 NTSB accident (substantial damage, Jun 1984)1 AD may apply

Registration
Deregistered
Last based in
Deerfield, WI
owner city / state
Owners
1
since 1984
NTSB events
1
substantial, 1984
ADs may apply
1
confirm with A&P
Service reports
0
since 1995

Registration

FAA Aircraft Registry · Oct 17, 2026
Last registered owner
Partnership
City, state
Deerfield, WI
Certificate issued
Feb 23, 1984
Canceled
Nov 12, 2014
Airworthiness
Restricted · Agriculture and Pest Control
Airworthiness date
Jun 21, 1984

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
H-23D
Year
1958
Serial number
1075
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
4
Engines
1
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
4H10
Mode S code
A824A7

Engine

Make and model
Lycoming Vo-435 Series
Type
Reciprocating
Power
260 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. 1984 – 2014PartnershipDeerfield, WI
  2. 1952 – 1960Albany Air ServiceAlbany, GA · different airframe: Consolidated Vultee Bt-13a S/N 6938

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 (1)

Accident · substantial damage

Jun 26, 1984 · Deerfield, WI

PLT WAS AWARE OF PWR LINES WHICH CROSSED THE FIELD OVER WHICH HE WAS PERFORMING A CALIBRATION TEST. PLT STATED THAT BECAUSE OF SUN GLARE VISUAL CONTACT WITH THE WIRES WAS LOST.THE ACFT CONTACTED THE WIRES.

Damage
Substantial
Injuries
Minor
Report
CHI84LA263

From NTSB records; matched by serial number.Read NTSB report (search CAROL for CHI84LA263)

Accident history for this model

ADs published since 1998 that may apply (1)

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
97-10-16Hiller Aircraft Corporation Model UH- 12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E…Jun 27, 1997Airframe (H-23D)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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