Engine model · 4 cycle · 100 hp · registry code 55591

Manufacturer (registry)
ROTAX
Model
912ISC
Registry code
55591
Type
4 cycle
Power
100 hp
Data sheet
TCDSE00051EN
Holder
BRP-Rotax GmbH & Co KG

The registry names only the engine series, so ADs for every model in the series are matched.

On this page

Airworthiness directives that may apply · 3

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

2023In forceSuperseded2026
ADs by the year they took effect: 4 ADs
20231
20252
20261
Superseded and historical ADs · 1
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_engine_model_directive.parquet' WHERE engine_model_code IN ('55591'))
  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 · 66

See all 66 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 engine_model_code IN ('55591')
  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 · 4

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

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.engine_model_code IN ('55591')
  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 · 7

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

Accident 20260609010019ACostruzioni Aeronautiche Tecna P-MENTOR · Pompano, FLOn June 9,2026 aircraft departed ft. lauderdale executive airport(kfxe) with CFI and student to perform takeoff and landings at Pompano airpark(kpmp). After receiving clearance from Pompano tower, the student pilot experienced an unstable approach before…Jun 9, 2026 · N410UV · Substantial damageIncident 20260511004969ICostruzioni Aeronautiche Tecna P-MENTOR · Creston, IASevere vibration in cruise flight followed by drop in engine oil pressure then engine seized resulting in total loss of engine power. Pilot performed emergency landing in farm field. No injuries, no damage to aircraft.May 11, 2026 · N314VV · No damageIncident 20260319007119ICostruzioni Aeronautiche Tecna P-MENTOR · Paola, KSWhile in cruise flight, the pilot-in-command (PIC) experienced a sudden, high-energy engine failure marked by a "loud pop" and severe airframe vibration. The PIC immediately declared an emergency and navigated toward K81. During the descent, the pilot noted…Mar 19, 2026 · N908KC · No damageAccident 20260211001299ACostruzioni Aeronautiche Tecna P-MENTOR · Des Moines, IAThe student pilot sucessfully completed the first touch-and-go maneuver without incident. The student pilot approached the runway faster than during her first attempt. A crosswind was encountered during the approach, leading to a bounced landing. The pilot…Feb 11, 2026 · N316VV · Substantial damageAccident 20250726021649AIcon A5 · Destin, FLAircraft was on final for runway 32 at Destin (dts) when The aircraft started running rough due to lack of fuel. Pilot was forced to make a landing in the water.Jul 26, 2025 · N594BA · Substantial damageIncident 20231107020349IKitfox Kitfox Light Sport · Marathon, FLAircraft experienced loss of engine rpm's and loss of power, aircraft started to lose altitude. The pilot landed the aircraft in the water northwest of Marathon Florida airport (kmth).Nov 7, 2023 · N605MS · Minor damageAccident 20231008016159ALoren D Jones Gyro Technic VX2 · Saint Peter, MNA group of 2 gyrocopters departed the mankato MN airport (mkt) and flew to the le sueur MN airport (12Y) to perform touch and go’s. the 2 aircraft departed 12Y flying along the river valley back towards mkt. PIC from the second aircraft stated they were…Oct 8, 2023 · N557LJ · Substantial damage · 1 fatal
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 engine_model_code IN ('55591')
  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

No reports name this modelGeneral aviation reporting is voluntary.