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Grumman G-21A

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Aircraft model · Fixed wing multi engine · Airplane · registry code 3951204

Manufacturer (registry)
GRUMMAN
Model
G-21A
Registry code
3951204
Registered
34 aircraft
Type
Fixed wing multi engine
Engines
2 · Reciprocating
Seats
8
Weight class
Up to 12,499 lb
Cruise speed
150 mph
Certification
Type certificated
Data sheet
TCDSTC 654
Holder
Frakes Aviation

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 · 72

1937Registered nowDeregistered2026

Airworthiness directives that may apply · 10

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

1964In forceSuperseded2026
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 ('3951204'))
  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.

Registered aircraft · 34

N1019NYonge Lawrence W Jr Trustee · Ocklawaha, FLBuilt 1946 · S/N B-30N121SRStick And Rudder Aviation Inc · Middletown, DEBuilt 1940 · S/N 1084N21AD B Aero Inc · Wilmington, DEBuilt 1946 · S/N B129
See all 34 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 ('3951204')
  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 · 76

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 3 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 14 cases with NTSB’s older coding, defined in its coding manual.

NTSB WPR14FA231Accident · 1 fatalField investigationFinal reportGrumman G 21A · Sula, MTThe pilot's decision to continue flight into deteriorating weather conditions in an airplane not maintained for instrument flight, which resulted in a loss of control due to spatial disorientation.Jun 17, 2014 · N888GG · DestroyedNTSB ANC08FA050Accident · Serious injuriesField investigationFinal reportGrumman G-21A · Unalaska, AKThe pilot's failure to maintain clearance from a truck while landing, and the vehicle operator's decision to ignore runway warning signals. Contributing to the accident was an inoperative vehicle gate system and the failure of airport management to adequately…Apr 10, 2008 · N741 · Substantial damageNTSB MIA08LA048Accident · Serious injuriesLimited investigationFinal reportGrumman G-21A · Marathon, FLThe pilot’s failure to maintain control of the airplane during a water landing.Jan 29, 2008 · N21A · Substantial damage
See all 76 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 ('3951204')
  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 · 62

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

Accident 20140617008759AGrumman G-21A · Sula, MTOn 17 June 2014 at approximately 1730 MDT a twin engine, Grumman G-21A N888GG, crashed enroute from salmon Idaho to hamilton mt under unknown circumstances. The aircraft impacted the ground in the parking lot at the lost trail ski resort, connor Montana. Upon…Jun 17, 2014 · N888GG · Destroyed · 1 fatalIncident 20090124024989IGrumman G-21A · Unalaska, AKTailwheel either failed to extend or collapsed on landing on runway 12 at Dutch Harbor. Pilot elected to taxi clear of the runway because an aircraft was on final approach. Taxi operation caused minor damage to the keel.Jan 24, 2009 · N985R · Minor damageAccident 20080409831909AGrumav G21A · Unalaska, AK(-23) At approximately 1630 adt on April 9, 2008, a Grumman goose (G-21A), N741, operated by peninsula airways under 14 CFR part 135 as a commuter, flight number 325, struck a container trailer of a truck while landing at dutch harbor, Alaska. The airplane…Apr 9, 2008 · N741 · Substantial damage
See all 62 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 ('3951204')
  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 · 26

SDR CA150904009Control Cable · failed(CAN) THE PROP GOVERNOR CONTROL CABLE CLAMPS ARE SLIPPING ON ENGINE MOUNT OVER TIME CREATING A SLIGHT DECREASE IN TAKE OFF RPM.May 27, 2015 · Grumav G21A · Propeller Controlling SystemSDR CA150417013Control Arm · backed out(CAN) THE ROLL PIN ATTACHING THE CARBURETOR MIXTURE CONTROL ARM TO THE ASSY WAS ABLE TO BACK OUT FAR ENOUGH TO MAKE CONTACT WITH THE MIXTURE STOP. NO SECONDARY SAFETY, LOCKWIRE WAS FOUND RETAINING THIS ROLL PIN ON THIS ASSEMBLY OR ANY REMAINING UNITS IN STOCKApr 15, 2015 · Grumav G21A · Fuel Control/Reciprocating EnginesSDR PNSA090102Bolt · out of adjustON LANDING ROLLOUT THE PILOT NOTICED THAT THE TAIL WHEEL HAD COLLAPSED AND THE KEEL AT THE AFT STEP WAS DRAGGING ON THE RUNWAY. THE PILOT TAXIED CLEAR OF THE RUNWAY. MAINTENANCE FOUND THAT A BOLT INSTALLED AT THE TAIL WHEEL LOCK ACTUATOR WAS CATCHING ON THE Jan 24, 2009 · N985R · Grumav G21A · Nose/Tail Landing Gear
See all 26 difficulty reports
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 = 'G21A'
  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.

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 SA02571SEInstallation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).Garmin International Inc.STC SA04837NYInstallation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lightsAeroLED's Holdings, LLCSTC SA04652CHTo allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specificationSwift Fuels 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 ('3951204')
    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.