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Hiller UH-12D

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Aircraft model · Rotorcraft · Rotorcraft · registry code 4360118

Manufacturer (registry)
HILLER
Model
UH-12D
Registry code
4360118
Registered
22 aircraft
Type
Rotorcraft
Engines
1 · Turbo-shaft
Seats
4
Weight class
Up to 12,499 lb
Cruise speed
75 mph
Certification
Type certificated
Data sheet
TCDS4H10
Holder
Siam Hiller Holdings Inc.

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

On this page

Aircraft by year built · 86

1952Registered nowDeregistered2026

Airworthiness directives that may apply · 39

ADs whose products match this airframe model. Each AD’s applicability may narrow it by serial number, part number or configuration.

1966In forceSuperseded2026
See all 41 ADs
Query with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
  FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
  WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('4360118'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"

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Registered aircraft · 22

N105HHHaddock Flying Service Inc · Salters, SCS/N 1307N106HHHaddock Flying Service Inc · Salters, SCS/N 1375N11CUPockrus Pat B · Mineral Wells, TXBuilt 1957 · S/N 983
See all 22 registered aircraft
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duckdb -csv -c "SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
  WHERE aircraft_model_code IN ('4360118')
  ORDER BY n_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

NTSB investigations · 50

Aircraft matched to this model through the registry, by N-number and event date, checked against the reported serial number, make and model.

Defining event, 2008 on

Of 4 cases NTSB coded with a defining event. All defining events

In the probable cause, 2008 on

Findings NTSB made part of the probable cause. A case can have several. All findings

First occurrence, 1982 to 2007

Of 22 cases with NTSB’s older coding, defined in its coding manual.

NTSB WPR20LA224Accident · 1 fatalClass 3 · LimitedFinal reportHiller UH 12D · Mehama, ORAn in-flight separation of a tail rotor blade due to fatigue cracking and overstress, which resulted in a loss of directional control and subsequent ground impact.Jul 17, 2020 · N2297W · DestroyedNTSB CEN16LA330Accident · Minor injuriesLimited investigationFinal reportHiller UH 12D · Cokeville, WYFailure of the control rotor cuff due to fatigue.Aug 23, 2016 · N97TH · Substantial damageNTSB WPR12LA347Accident · Minor injuriesLimited investigationFinal reportHiller UH-12D · Deer Island, ORA loss of helicopter control while maneuvering at low altitude for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.Aug 7, 2012 · N47035 · Substantial damage
See all 50 investigations
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
  WHERE a.aircraft_model_code IN ('4360118')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

FAA incident reports · 60

Matched to this model through the registry, by N-number and event date, checked against the reported make and model.

Accident 20200717012169AHiller UH-12D · Mehama, ORHelicopter departed one field to relocate to next field for spraying. Witnesses report hearing engine pitch change and then heard helicopter impact the trees. According to farm owner, heard pilot report "going down" It appears helicopter struck some trees and…Jul 17, 2020 · N2297W · Destroyed · 1 fatalAccident 20120807020729AHiller UH-12D · Deer Island, ORDuring a spry operation the pilot reported that at the start of an ag turn he felt a shudder. He easeied out of the turn and then heard a loud bang, he estimated that he was at about 45FT abouve gorund. He said he had little to no control and that the…Aug 7, 2012 · N47035 · Substantial damageAccident 20110317009549AHiller UH-12D · Iowa, LAIt was determined the aircraft entered a dynamic roll over after hard contact with the landing surface occurred. It is believed, the aircraft was subjected to an unanticipated gust of tail wind causing loss of tail rotor effectiveness (lte). It was further…Mar 17, 2011 · N11CU · Substantial damage
See all 60 incident reports
Query with SQL
duckdb -csv -c "SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
  FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
  WHERE aircraft_model_code IN ('4360118')
  ORDER BY event_date DESC, report_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Service difficulty reports · 4

SDR 2015FA0000446Fork · crackedTHE ACFT WAS PERFORMING AERIAL APPLICATION UNDER RESTRICTED CATEGORY. PRIOR TO 9/8/2015, THE PILOT REPORTED THE ACFT FLEW SMOOTH. PILOT REPORTED THAT THE LAST FLIGHT ON 9/7/2015 THE ACFT DEVELOPED A SLIGHT LATERAL VIBRATION. THE NEXT MORNING ON 9/8/2015, HESep 8, 2015 · N94AP · Hiller UH12D · Main Rotor HeadSDR CA051212002Blade · failedA SEVERE VERT VIBRATION OCCURRED WHEN HELICOPTER ENTERED A SPRAY RUN. VIBRATION CEASED JUST BEFORE LANDING ON A NEARBY ROAD. ROTOR HEAD WAS REMOVED AND NDT'D FOR CRACKS, NONE FOUND. HELICOPTER WAS RE-ASSEMBLED, ALL FLT CONTROLS WERE CHECKED FOR DAMAGE AND SAug 14, 2005 · Hiller UH12D · Main Rotor BladesSDR 97ZZZX1674Control Link · bolt detachedWHILE IN-FLIGHT, 2-13-97 APPROX 4 PM, ATTACHMENT BOLT VIBRATED OUT OF THE UPPER END OF THE COLLECTIVE CONTROL ROD. A LEATHER PUNCH WAS INSERTED IN THE CLEVIS AND THROUGH THE BALL END AND HELD IN PLACE RESTORING COLLECTIVE CONTROL. AIRCRAFT LANDED WITHOUT INCFeb 13, 1997 · N3416F · Hiller UH12D · Main Rotor ControlSDR 96ZZZX3237Hub · crackedWHILE C/W AD 73-20-03 10/30/73, DYE PEN AND VISUAL INSPECTION OF M/R HUB, A CRACK WAS FOUND ABOUT .75 INCHES LONG. M/R HUB WAS REMOVED AND SCRAPPED AND A SERVICEABLE ZERO TSO M/R HEAD ASSY WAS INSTALLED AND AIRCRAFT WAS RETURNED TO SERVICE.Apr 30, 1996 · N58BA · Hiller UH12D · Main Rotor Head
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE aircraft_model_key = 'UH12D'
  ORDER BY difficulty_date DESC"

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STCs that may be installed · 41

Approved for this model: the STC’s model list names it on its data sheet, or a series that includes it. The registry doesn’t record which STCs an aircraft has.

STC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,Precise Flight IncSTC SR02704SEInstallation and maintenance of the Sunspot 36 and 46 series lightsAeroLED's Holdings LLCSTC SR00359BOInstallation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.Whelen Aerospace Technologies
See all 41 STCs
Query with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
  FROM (
    SELECT stc_number, min(matched_model) AS matched_model
    FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
    WHERE aircraft_model_code IN ('4360118')
    GROUP BY stc_number
  ) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
  ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

The same model under other registry codes

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

Hiller-Osborn UH-12D2 registered aircraftRegistry code 4361501Hiller-Northern UH-12D0 registered aircraftRegistry code 4361301Hiller-Houska UH-12D0 registered aircraftRegistry code 4361601Rogerson Hiller UH-12D0 registered aircraftRegistry code 4365001
Query with SQL
duckdb -csv -c "SELECT m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.aircraft_model_code = m.code
  WHERE m.match_key = 'UH12D' AND m.code NOT IN ('4360118')
  GROUP BY ALL
  ORDER BY aircraft DESC
  LIMIT 12"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.