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Enstrom F-28A

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Aircraft model · Rotorcraft · Rotorcraft · registry code 3300406

Manufacturer (registry)
ENSTROM
Model
F-28A
Registry code
3300406
Registered
38 aircraft
Type
Rotorcraft
Engines
1 · Reciprocating
Seats
3
Weight class
Up to 12,499 lb
Cruise speed
75 mph
Certification
Type certificated
Data sheet
TCDSH1CE
Holder
The Enstrom Helicopter Corporation

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 · 137

1966Registered nowDeregistered2026

Airworthiness directives that may apply · 27

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

1972In forceSuperseded2026
See all 33 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 ('3300406'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_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.

Information bulletins that may apply · 1

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duckdb -csv -c "SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
  FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
  WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_saib.parquet' WHERE aircraft_model_code IN ('3300406'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 38

N13CMBolin William E · Smithville, OHBuilt 1972 · S/N 090N173Shafer Robert T · Grosse Ile, MIBuilt 1974 · S/N 218N194EBechtel Friend · Dry Ridge, KYS/N 009
See all 38 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 ('3300406')
  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 · 161

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 7 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 55 cases with NTSB’s older coding, defined in its coding manual.

NTSB ERA26FA077Accident · 2 fatalClass 3 · FieldPreliminary reportEnstrom F28 · Hammonton, NJOn December 28, 2025, at 1124 eastern standard time, an Enstrom F-28A helicopter, N520H, and an Enstrom 280C helicopter, N280MG, collided in midair near Hammonton, New Jersey. The private pilots onboard each of the helicopters were fatally injured. Both…Dec 28, 2025 · N520H · 2 aircraft · Substantial damageNTSB WPR21LA293Accident · No injuriesClass 4 · LimitedFinal reportEnstrom F-28A · Mountain Home, IDThe pilot's improper fuel planning and improper in-flight decision-making, which resulted in a total loss of engine power due to fuel exhaustion and a subsequent hard landing on uneven terrain.Jul 28, 2021 · N46MU · Substantial damageNTSB CEN20LA051Accident · No injuriesClass 3 · LimitedFinal reportEnstrom F28 · Danbury, TXThe failure of the engine's No.3 intake valve resulting is a loss of engine power and a rollover following the autorotation to soft ground.Dec 31, 2019 · N57SJ · Substantial damage
See all 161 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 ('3300406')
  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 · 190

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

Accident 20251228019712AEnstrom F-28A · Hammonton, NJEnstrom F-28A helicopter collided mid-air with an Enstrom 280C after departure from N81. Both helicopters observed to be flying in close proximity to each other shortly before the accident. The helicopters were slightly staggered from each other and flying on…Dec 28, 2025 · N520H · Substantial damage · 1 fatalAccident 20210728012049AEnstrom F-28A · Mountian Home, IDOn July 28 pilot[privacy data omitted] determined the helicopter needed fuel. He was unsure about the fuel quantity so he put in 2-3 gallons of fuel. While flying/ taxiing to the fuel point the pilot diverted around the fuel point because of the number of…Jul 28, 2021 · N46MU · Substantial damageIncident 20210407001799IEnstrom F-28A · Springdale, ARInvestigation: on April 7, 2021 at 1800 local at kasg, the pilot of N9274 while on a solo helicopter flight was performing hovering autorotations on the field sod area when the lading gear contacted a soft muddy area causing the aircraft to yaw, and…Apr 7, 2021 · N9274 · Minor damage
See all 190 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 ('3300406')
  ORDER BY event_date DESC, report_number DESC"

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Service difficulty reports · 6

SDR 2017FA0000655Intake Rocker · wornWHILE CONDUCTION FLIGHT OPERATIONS AND PERFORMING A RIGHT MANEUVER, ENGINE STARTED RUNNING ROUGH. UPON REACHING PATTERN ALTITUDE THE ENGINE COULD NOT MAINTAIN RPM AND HELICOPTER STARTED LOSING ALTITUDE AND AN EMERGENCY LANDING WITH AUTO ROTATION HAD TO BE PERFDec 20, 2017 · N90775 · Enstrm F28A · Reciprocating Engine Cylinder SectionSDR CA141218005Engine · power loss(CAN) AFTER NORMAL APPROACH TO LAND, THE TORQUE DROPPED UN-COMMANDED FROM 3400LBS TO 2600LBS, THEN BACK UP AGAIN UN-COMMANDED. OTHER ENGINE PARAMETERS FOLLOWED.Dec 5, 2014 · Enstrm F28A · Engine (Turbine/Turboprop)SDR GWH2011F00000Drive Belt · frayedBELT WAS FOUND TO BE FRAYED ABOUT .5" IN FROM THE AFT SIDE, THE ENTIRE LENGTH OF BELT. PILOT STATED BELT WAS IN GOOD CONDITION WHEN ACFT WAS PREFLIGHTED ABOUT AN HOUR PRIOR TO THE FAILURE. HE HEARD A "POP" AND RETURNED TO THE HANGAR TO FIND RUBBER CHIPS AND Nov 11, 2011 · N287Q · Enstrm F28A · Engine (Reciprocating)SDR AU980809Cylinder · cracked(AUS) CYLINDER HEAD SEPARATED FROM BARREL AT THE SECOND THREAD FROM THE TOP.Jul 17, 1998 · Enstrm F28A · Reciprocating Engine Cylinder SectionSDR 98ZZZX1739Coil · failedCOMPLAINT WAS 'MISFIRE' AT CRUISE POWER. SYMPTOM WAS NOSE YAW AT ERRATIC INTERVALS. NORMAL PREFLIGHT RUN-UP CHECK SHOWED NO PROBLEM. MAGNETO CHECK AT HOVER POWER CAUSED ENGINE FAILURE WHEN 'LEFT' MAGNETO POSITION WAS SELECTED. RECORDS INDICATE THIS COIL HAApr 18, 1998 · N57SJ · Enstrm F28A · Magneto/DistributorSDR 95ZZZX1314Distributor Gear · teeth failedTEN MINUTES INTO A TOUR FLIGHT, ENGINE BECAME MOMENTARILY ROUGH. UPON RETURNING TO THE HELIPAD, A MAG CHECK REVEALED THE RIGHT MAG WAS DEAD. UPON REMOVAL AND INSPECTION, FOUND MORE THAN HALF OF THE PLASTIC TEETH WERE MISSING (BROKEN OFF) OF THE LARGE DISTRIBJan 30, 1995 · N9087 · Enstrm F28A · Magneto/Distributor
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 = 'F28A'
  ORDER BY difficulty_date DESC"

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STCs that may be installed · 40

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 SR00063DEInstallation of Inframetrics IRTV-445G infrared imaging system.Dart Aerospace CompanySTC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,Precise Flight IncSTC SA11137SCInstallation of Plane-Power ALT-FLX alternatorHartzell Engine Technologies, LLC
See all 40 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 ('3300406')
    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"

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The same model under other registry codes

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

Enstrom Helicopter F-28A1 registered aircraftRegistry code 3300401
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 = 'F28A' AND m.code NOT IN ('3300406')
  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.