# Hiller H-23D

- Type: Aircraft model (FAA registry)
- Registry code: 4360120
- Manufacturer (registry): HILLER
- Model: H-23D
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Reciprocating
- Seats: 4
- Weight class: Up to 12,499 lb
- Cruise speed: 75 mph
- Certification: Type certificated
- Data sheet: [TCDS 4H10](https://openairdocs.org/tcds/4H10) (OpenAirDocs)
- Holder: Siam Hiller Holdings Inc.
- Registered aircraft: 6
- Page: https://openairdocs.org/model/hiller-h-23d

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (6)

- [N33472](https://openairdocs.org/aircraft/N33472): [Pockrus Pat Bruce](https://openairdocs.org/faa-owner/POCKRUS%20PAT%20BRUCE), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1972, S/N 61-3097
- [N48263](https://openairdocs.org/aircraft/N48263): [Sarah Business LLC](https://openairdocs.org/faa-owner/SARAH%20BUSINESS%20LLC), [Merritt Island, FL](https://openairdocs.org/faa-place/FL/Merritt%20Island), built 1959, S/N 1208
- [N64275](https://openairdocs.org/aircraft/N64275): [Historic Aviation Memorial Museum](https://openairdocs.org/faa-owner/HISTORIC%20AVIATION%20MEMORIAL%20MUSEUM), [Tyler, TX](https://openairdocs.org/faa-place/TX/Tyler), S/N 1243
- [N67107](https://openairdocs.org/aircraft/N67107): [Stebbins Craig S](https://openairdocs.org/faa-owner/STEBBINS%20CRAIG%20S), [Glendive, MT](https://openairdocs.org/faa-place/MT/Glendive), S/N 1128
- [N94516](https://openairdocs.org/aircraft/N94516): [Fort Wolters Helicopter Inc](https://openairdocs.org/faa-owner/FORT%20WOLTERS%20HELICOPTER%20INC), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1959, S/N 1246
- [N94517](https://openairdocs.org/aircraft/N94517): [Fort Wolters Helicopter](https://openairdocs.org/faa-owner/FORT%20WOLTERS%20HELICOPTER), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1961, S/N 1304

## NTSB investigations (24)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ERA25LA167](https://openairdocs.org/ntsb/ERA25LA167), Apr 6, 2025: Hiller UH12E (N48263), Rockledge, FL, substantial damage, investigation ongoing
- [NTSB LAX00LA107](https://openairdocs.org/ntsb/LAX00LA107), Feb 21, 2000: Hiller H-12E (N61PC), Byron, CA, substantial damage. Probable cause: The pilot's inadequate visual lookout while maneuvering in proximity to wires. A contributing factor was the sun glare, which reduced the wire's conspicuity.
- [NTSB SEA94LA064](https://openairdocs.org/ntsb/SEA94LA064), Feb 23, 1994: Hiller-Soloy H-23D (N62413), Seaside, OR, destroyed. Probable cause: THE PILOT'S IMPROPER USE OF FLIGHT CONTROLS RESULTING IN SETTLING WITH POWER.
- [NTSB MKC90LA138](https://openairdocs.org/ntsb/MKC90LA138), Jun 26, 1990: Hiller 12-E (N62397), Watson, MN, substantial damage. Probable cause: PILOT MISJUDGED HIS FLARE AND COLLIDED WITH THE TERRAIN.
- [NTSB CHI89DEP07](https://openairdocs.org/ntsb/CHI89DEP07), Jul 20, 1989: Hiller UH-12E (N48313), Blackriverfalls, WI, destroyed. Probable cause: PILOT-IN-COMMAND'S FAILURE TO JETTISON THE EXTERNAL LOAD FOLLOWED BY HIS MISJUDGEMENT OF DISTANCE TO AVOID COLLISION WITH THE EXTERNAL LOAD.
- [NTSB LAX87DVD04](https://openairdocs.org/ntsb/LAX87DVD04), Aug 5, 1987: Hiller UH-23-D (N61PC), Brentwood, CA, substantial damage
- [NTSB MKC84LA205](https://openairdocs.org/ntsb/MKC84LA205), Jul 9, 1984: Hiller H-23D (N48313), Neelyville, MO, destroyed
- [NTSB CHI84LA263](https://openairdocs.org/ntsb/CHI84LA263), Jun 26, 1984: Hiller UH 12 D (N62362), Deerfield, WI, substantial damage
- [NTSB SEA84LA066](https://openairdocs.org/ntsb/SEA84LA066), Mar 12, 1984: Hiller UH-12E (N62377), Forest Grove, OR, substantial damage
- [NTSB ATL82DA227](https://openairdocs.org/ntsb/ATL82DA227), Aug 2, 1982: Hiller UH12D (N79SW), Dothan, AL, substantial damage
- [NTSB SEA82DA057](https://openairdocs.org/ntsb/SEA82DA057), Apr 23, 1982: Hiller-Soloy 12E (N62377), Christmas Valle, OR, minor damage
- [NTSB SEA81DYE31](https://openairdocs.org/ntsb/SEA81DYE31), Jun 10, 1981: Hiller UN-12D (N62377), Castle Rock, WA, destroyed
- [NTSB CHI81FCA05](https://openairdocs.org/ntsb/CHI81FCA05), Apr 17, 1981: Hiller UH-12D (N2MJ), Cahokia, IL, substantial damage
- [NTSB MIA81FA053](https://openairdocs.org/ntsb/MIA81FA053), Mar 20, 1981: Hiller UH-12D (N62376), Miami Beach, FL, destroyed
- [NTSB MIA81FKT31](https://openairdocs.org/ntsb/MIA81FKT31), Mar 8, 1981: Hiller Acft UH-12D (N62362), Miami, FL, substantial damage
- [NTSB SEA80DYE03](https://openairdocs.org/ntsb/SEA80DYE03), Oct 29, 1979: Hiller Acft UH-12D (N62377), Amanda Park, WA, substantial damage
- [NTSB MKC79FTG12](https://openairdocs.org/ntsb/MKC79FTG12), Jul 21, 1979: Hiller UH-12D (N62397), Minot, ND, substantial damage
- [NTSB MIA79DKQ10](https://openairdocs.org/ntsb/MIA79DKQ10), May 1, 1979: Hiller UH12D (N48313), Drew, MS, substantial damage
- [NTSB LAX77FUM34](https://openairdocs.org/ntsb/LAX77FUM34), Aug 6, 1977: Hiller Acft UH-12E (N62413), Calipatria, CA, substantial damage
- [NTSB MIA77FKT05](https://openairdocs.org/ntsb/MIA77FKT05), Oct 23, 1976: Hiller UH-12D (N62401), Lake Worth, FL, substantial damage
- [NTSB MKC76FCD47](https://openairdocs.org/ntsb/MKC76FCD47), Jun 6, 1976: Hiller Acft UH-12D (N79SW), Dallas Center, IA, destroyed
- [NTSB MIA76FKT61](https://openairdocs.org/ntsb/MIA76FKT61), Mar 15, 1976: Hiller UH-12D (N62362), Miami, FL, substantial damage
- [NTSB MKC76FCD13](https://openairdocs.org/ntsb/MKC76FCD13), Sep 11, 1975: Hiller Acft H-23D (N79SW), Lakewood, IA, destroyed
- [NTSB MKC75FCD46](https://openairdocs.org/ntsb/MKC75FCD46), Jun 16, 1975: Hiller Acft H-23D (N79SW), Nevada, IA, substantial damage

## FAA accident and incident reports (25)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft 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.

- [Accident 20250406004109A](https://openairdocs.org/incident/20250406004109A), Apr 6, 2025: Hiller H-23D (N48263), Rockledge, FL, Destroyed. The rotorcraft had departed from merritt island airport (kcoi) enroute to the [privacy data omitted] in lakeland, FL. Approximately 2.6 miles west of runway 29…
- [Accident 20000221012719A](https://openairdocs.org/incident/20000221012719A), Feb 21, 2000: Hiller H23D (N61PC), Victoria Island, No damage. (-23) Pilot reports, as substantiated by written statement, that he was performing an aerial reconnaisance of a crop of asparagus. Weather was clear & sunny.…
- [Accident 19940223002839A](https://openairdocs.org/incident/19940223002839A), Feb 23, 1994: Hiller H23D (N62413), Seaside, OR, Destroyed. During hover to attach long line began uncontrolled descent. Lowered collective powered to run landing. Caught skid
- [Accident 19900625022739A](https://openairdocs.org/incident/19900625022739A), Jun 25, 1990: Hiller H23D (N62397), Watson, MN, Substantial damage. Entered field but failed to level off. Hit ground twice and backed into trees.
- [Accident 19890720024199A](https://openairdocs.org/incident/19890720024199A), Jul 20, 1989: Hiller UH12E (N48313), Black River Fal, WI, Destroyed. Throttle broke after pick up of sling load. Failed to jettison. Crash landed on hopper. Throttle worn and frayed.
- [Accident 19870805043249A](https://openairdocs.org/incident/19870805043249A), Aug 5, 1987: Hiller H23D (N61PC), Brentwood, CA, Substantial damage. The helicopter impacted the ground during aerial application.
- [Accident 19840709030809A](https://openairdocs.org/incident/19840709030809A), Jul 9, 1984: Hiller H23D (N48313), Neelyville, MO, Destroyed. Reported failure between engine and rotor drive. Rolled on forced landing. Yoke control fractured. No metal fatigue
- [Accident 19840626033649A](https://openairdocs.org/incident/19840626033649A), Jun 26, 1984: Hiller H23D (N62362), Deerfield, WI, Substantial damage. Helicopter hit powerlines during spray run to test spraying equipment.
- [Accident 19840312006619A](https://openairdocs.org/incident/19840312006619A), Mar 12, 1984: Hiller UH12E (N62377), Forest Grove, OR, Substantial damage. Pilot reported engine lost power while hovering to attach long line. Crashed into trees. Engine check out normal.
- [Accident 19820802034529A](https://openairdocs.org/incident/19820802034529A), Aug 2, 1982: Hiller UH12D (N79SW), Dothan, AL, Substantial damage. Crash occurred after engine quit due to fuel exhaustion returning from spraying operation.
- [Accident 19820423012029A](https://openairdocs.org/incident/19820423012029A), Apr 23, 1982: Hiller UH12E (N62377), Christmas Valle, OR, Minor damage. Ground man injured when tow line cable caught in helicopter rotors during attempt to refasten tow line.
- [Accident 19810610032829A](https://openairdocs.org/incident/19810610032829A), Jun 10, 1981: Hiller UH12D (N62377), Toledo, WA, Destroyed. Helicopter spun into ground uncontrolably when tail rotor drive system failed.
- [Accident 19810417018049A](https://openairdocs.org/incident/19810417018049A), Apr 17, 1981: Hiller UH12D (N2MJ), Cahokia, IL, Substantial damage. Helicopter ran out of fuel and crashed during autorotation landing on airport.
- [Accident 19810320011329A](https://openairdocs.org/incident/19810320011329A), Mar 20, 1981: Hiller UH12E (N62376), Miami Beach, FL, Substantial damage. Severe turbulence over city. Lost altitude. Struck power pole on decidion to autorotate to a street landing.
- [Accident 19810308008849A](https://openairdocs.org/incident/19810308008849A), Mar 8, 1981: Hiller UH12D (N62362), Miami, FL, Substantial damage. Engine rod bolt broke. Caused rod failure. Made hard autorotation landing. Rolled over.
- [Accident 19791029039809A](https://openairdocs.org/incident/19791029039809A), Oct 29, 1979: Hiller UH12L3 (N62377), Amanda Park, WA, Substantial damage. Tail rotor control cable broke during external load hover. Aircraft spun to the right, hit a parked car.
- [Accident 19790721015329A](https://openairdocs.org/incident/19790721015329A), Jul 21, 1979: Hiller UH12D (N62397), Minot, ND, Substantial damage. Engine stopped during takeoff climbout. Made hard autorotation landing. Fuel exhhaustion and dirty fuel.
- [Incident 19790531028859I](https://openairdocs.org/incident/19790531028859I), May 31, 1979: Hiller UH12D (N86665), Syracuse, NY. Landed due to trim problems, replaced trim switch pn 332603.
- [Accident 19790501005429A](https://openairdocs.org/incident/19790501005429A), May 1, 1979: Hiller UH12D (N48313), Drew, MS, Substantial damage. Pilot flew into wire while conducting agricultural operations.
- [Accident 19770806023889A](https://openairdocs.org/incident/19770806023889A), Aug 6, 1977: Hiller H23D (N62413), Calipatria, CA, Substantial damage. Nr 1 cyl con rod failed. Emerg ldg attempted at too low alt in cotton field.
- [Accident 19761023036159A](https://openairdocs.org/incident/19761023036159A), Oct 23, 1976: Hiller H23D (N62401), Lake Worth, FL, Substantial damage. Fuel line contained dirt and water.
- [Accident 19760606015509A](https://openairdocs.org/incident/19760606015509A), Jun 6, 1976: Hiller H23D (N79SW), Dallas Center, IA, Destroyed
- [Accident 19760315010879A](https://openairdocs.org/incident/19760315010879A), Mar 15, 1976: Hiller H23D (N62362), Miami, FL, Substantial damage. Sightseeing flt
- [Accident 19750911028729A](https://openairdocs.org/incident/19750911028729A), Sep 11, 1975: Hiller UH12C (N79SW), Lakewood, IA, Substantial damage. Plts attn directed to spray boom.
- [Accident 19750616015019A](https://openairdocs.org/incident/19750616015019A), Jun 16, 1975: Hiller H23D (N79SW), Nevada, IA, Substantial damage. Spray run abt 5-10FT abv corn.

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Rogerson Hiller H-23D](https://openairdocs.org/model/rogerson-hiller-h-23d): 0 registered aircraft, registry code 4365003

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