Hughes OH-6A

Aircraft model · Rotorcraft · Rotorcraft · registry code 4470905

Manufacturer (registry)
HUGHES
Model
OH-6A
Registry code
4470905
Registered
24 aircraft
Type
Rotorcraft
Engines
1 · Turbo-shaft
Seats
4
Weight class
Up to 12,499 lb
Certification
Type certificated
Data sheet
TCDSH3WE
Holder
MD Helicopters LLC

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

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Aircraft by year built · 23

1966Registered nowDeregistered2026
Aircraft by the year they were built: 23 aircraft
19661
19677
196811
19692
19991
20001

Airworthiness directives that may apply · 0

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

No ADs matched this model

Registered aircraft · 24

See all 24 registered aircraft
Query with SQL
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 ('4470905')
  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 · 28

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

See all 28 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 ('4470905')
  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 · 22

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

See all 22 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 ('4470905')
  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 · 6

SDR R81R2016FA0000014Abrasion Strip · departedPILOT REPORTED NOISE THEN IMMEDIATE SEVERE VIBRATION WHILE TRANSITIONING FROM HOVER TO FWD FLIGHT APPORXIMATELY 12" ABOVE GROUND TO ROTOR. ACFT WAS LANDED WITHOUT INCIDENT. UPON ARRIVAL, ACFT WAS INSPECTED FOR ABNORMALITIES. FOUND MAIN ROTOR BLADE L/E ABRAJan 8, 2016 · N5187Y · Hughes OH6A · Main Rotor BladesSDR 98ZZZX1880Dampener Support · crackedDURING A 300-HOUR INSPECTION, A CRACK WAS NOTICED ON THE TAIL ROTOR DRIVE SHAFT DAMPENER SUPPORT. AFTER REMOVING TAIL BOOM, THE CRACK WAS ABOUT .75 INCHES LONG AND WAS FOUND ON TOP RIGHT PART OF BRACKET.Apr 2, 1998 · N6638R · Hughes OH6A · Tail Rotor Drive ShaftSDR 98ZZZX1390Skin · crackedDURING AN INSPECTION, A 4 INCH CRACK WAS FOUND ON TOP OF HORIZONTAL STABILIZER INBOARD OF THE HORIZONTAL SUPPPORT BRACKET. THE SKIN OF THE HORIZONTAL STABILIZER WAS REMOVED AND FOUND THE HORIZONTAL STABILIZER SPAR WAS CRACKED ALL THE WAY THROUGH.Mar 6, 1998 · N5185N · Hughes OH6A · Horizontal Stabilizer, Plate/SkinSDR 98ZZZX1389Skin · crackedDURING INSPECTION, A 1 INCH CRACK WAS FOUND ON TOP OF THE HORIZONTAL STABILIZER. ALSO, A .25 INCH CRACK WAS FOUND SAME AREA, BUT ON BOTTOM SIDE OF HORIZONTAL STABILIZER. THE PART WAS REMOVED FROM SERVICE.Mar 6, 1998 · N6186U · Hughes OH6A · Horizontal Stabilizer, Plate/SkinSDR 96ZZZX5617Regulator · failedSHORTLY AFTER TAKEOFF, VOLTAGE REGULATOR FAILURE CONTRIBUTED TO SLIGHT SMOKE EMITTING FROM COMPONENT. PRECAUTIONARY LANDING MADE, W/H CONNECTOR DISCONNECTED FROM VRS. A/C FLOWN TO HOME BASE, 5-MINUTE FLIGHT, A/C BATTERY UTILIZED. AT THIS TIME VOLTAGE REGULAOct 1, 1996 · N446SD · Hughes OH6A · AC RegulatorSDR 96ZZZX1385Elt · wire brokenWEAK TRANSMISSION BATTERY VOLTAGE GOOD. WIRE BROKEN OFF ANTENNA CONNECTOR INSIDE TRANSMITTER FROM CIRCUIT BOARD. RETURNED TO MANUFACTURER FOR REPAIR.Jan 22, 1996 · N1874M · Hughes OH6A · Emergency Locator Beacon
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 = 'OH6A'
  ORDER BY difficulty_date 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.

The same model under other registry codes

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

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 = 'OH6A' AND m.code NOT IN ('4470905')
  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.