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Beech C-99

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Aircraft model · Fixed wing multi engine · Airplane · registry code 1154006

Manufacturer (registry)
BEECH
Model
C-99
Registry code
1154006
Registered
54 aircraft
Type
Fixed wing multi engine
Engines
2 · Turbo-prop
Seats
17
Weight class
Up to 12,499 lb
Certification
Type certificated
Data sheet
TCDSA14CE
Holder
Textron Aviation Inc.

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 · 64

1981Registered nowDeregistered2026

Airworthiness directives that may apply · 26

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

1971In forceSuperseded2026
See all 28 ADs
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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 ('1154006'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"

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Information bulletins that may apply · 3

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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 ('1154006'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 54

N104BEUas Transervices Inc · Boca Raton, FLBuilt 1984 · S/N U-221N106SXUas Transervices Inc · Boca Raton, FLBuilt 1981 · S/N U-166N108SXUas Transervices Inc · Boca Raton, FLBuilt 1982 · S/N U-184
See all 54 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 ('1154006')
  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.

STCs approved for this model · 139

STC SA00075DE-DInstallation of Sundstrand MK-VI GPWS system.Learjet IncSTC SA00076DE-DInstallation of radio altimeter system.Learjet IncSTC SA00077DE-DInstallation of provisions for a Bendix/King CAS-66 TCAS I system.Learjet Inc
See all 139 STCs
Query with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date
  FROM 'https://openairdocs.org/data/latest/faa_stc.parquet' s
  WHERE s.stc_number IN (SELECT stc_number FROM 'https://openairdocs.org/data/latest/faa_stc_model.parquet' WHERE model_key = 'C99')
  ORDER BY s.status = 'Current' DESC, s.stc_number"

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NTSB investigations · 32

Aircraft matched to this model through the registry, by N-number and event date.

Defining event, 2008 on

Of 13 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 19 cases with NTSB’s older coding, defined in its coding manual.

NTSB CEN25FA006Accident · 1 fatalClass 3 · FieldFinal reportBeech C99 · Norfolk, NEThe pilot’s failure to maintain adequate airspeed following a partial loss of engine power during takeoff, which resulted in a loss of airplane control. Contributing to the accident was the fatigue failure of the compressor turbine fan disk blade.Oct 8, 2024 · N130GP · DestroyedNTSB ERA24FA097Accident · Serious injuriesClass 3 · FieldFinal reportBeech C99 · Londonderry, NHThe pilot’s failure to ensure that the cockpit door was secured before flight, which resulted in its separation during initial climb and a subsequent loss of control.Jan 26, 2024 · N53RP · Substantial damageNTSB ERA23FA346Accident · 2 fatalClass 3 · FieldFinal reportBeech C-99 · Litchfield, MEA horizontal stabilizer pitch trim anomaly that was not identified in the available evidence.Aug 22, 2023 · N55RP · Destroyed
See all 32 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 ('1154006')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

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FAA incident reports · 102

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

Incident 20250306003569IBeech C-99 · O'Neill, NEThe pilot of a Beechcraft C99 attempted to takeoff from O'Neill, Nebraska (konl) for a part 135 cargo flight to norfolk, Nebraska (kofk) on March 6, 2025, at approximately 8:00 pm CST. There was light snow at the time with a 9 knot wind from 060 degrees and…Mar 6, 2025 · N388AV · Minor damageAccident 20241007020409ABeech C-99 · Norfolk, NEOn oct 7th 2024 at approx 1935 CST a BE99 aircraft departed rwy 20 from the Norfolk Airport(ofk), weather was VMC, on climb out during a left hand turn the aircraft decended and crashed just outside the airport boundry. The number 1 eng was determanted to not…Oct 7, 2024 · N130GP · Destroyed · 1 fatalAccident 20240126000329ABeech C-99 · Londonderry, NHOn January 26, 2024 at about 0726 local time a Beechcraft BE-99 aircraft impacted the ground under unknown circumstances in Londonderry, NH in the area of colonial drive. There were no fatalities and aircraft was destroyed on impact. The PIC and sole occupant…Jan 26, 2024 · N53RP · Destroyed
See all 102 incident reports
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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 ('1154006')
  ORDER BY event_date DESC, report_number DESC"

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Service difficulty reports · 241

SDR JIKA2026081801Downlock Switch · faultedTHE FLIGHT CREW REPORTED THAT DURING APPROACH, THE LANDING GEAR SELECT HANDLE WAS PLACED IN THE DOWN POSITION BUT THE NOSE LANDING GEAR FAILED TO INDICATE THAT IT WAS DOWN & LOCKED AFTER EXTENSION. A MANUAL LANDING GEAR EXTENSION WAS PERFORMED AND THE AIRCRAFTAug 15, 2026 · N174AV · Beech C99 · Landing Gear Position and WarningSDR JIKA2026070801Control Module · faultedPILOT REPORTED THAT WHILE RUNNING THE BEFORE LANDING FLOW CHECKLIST, THE LANDING GEAR CONTROL HANDLE WAS UNABLE TO BE SELECTED TO THE DOWN POSITION. THEN SWITCHED TO THE ABNORMAL LANDING PROCEDURE CHECKLIST AND WAS ABLE TO MANUALLY EXTEND THE LANDING GEAR TO Jul 6, 2026 · N191AV · Beech C99 · Landing Gear SelectorSDR JIKA2026051201Downlock Switch · warning lightDURING APPROACH, THE LANDING GEAR WAS SELECTED TO THE DOWN AND LOCKED POSITION. THE #1 MAIN LANDING GEAR ASSEMBLY DOWN AND LOCK LIGHT DID NOT ILLUMINATE, AND THE FLIGHT CREW PERFORMED A MANUAL LANDING GEAR EXTENSION. MAINTENANCE TROUBLESHOT THE FAILURE TO A FAMay 6, 2026 · N6724D · Beech C99 · Landing Gear Position and Warning
See all 241 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 = 'C99'
  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.