- Manufacturer (registry)
- ROTAX
- Model
- 503ULDCDI
- Registry code
- 55568
- Installed in
- 71 registered aircraft
- Type
- 2 cycle
- Power
- 52 hp
Model codes come from the FAA registry’s reference file.
On this page
Airworthiness directives that may apply · 0
ADs whose products match this engine model. Each AD’s applicability may narrow it by serial number, part number or configuration.
No ADs matched this model
Registered aircraft · 71
N10091Hendrickson Carl R · Alamogordo, NMN105WZMorrison Malcolm B · The Villages, FLN111KPKarlovich James W · Kingston, GA
See all 71 registered aircraftQuery 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 ('55568')
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.
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 ('55568')
ORDER BY n_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB investigations · 10
Aircraft matched to this engine model through the registry, by N-number and event date.
Of 7 cases NTSB coded with a defining event. All defining events
Findings NTSB made part of the probable cause. A case can have several. All findings
Of 2 cases with NTSB’s older coding, defined in its coding manual.
NTSB ERA26FA110Accident · Serious injuriesClass 3 · FieldPreliminary reportPipistrel Taurus 503 · Boynton Beach, FLOn February 9, 2026, about 1514 eastern standard time, a Pipistrel Taurus 503 motorglider, N414HG, was substantially damaged when it was involved in an accident at Willis Gliderport (FA44), Boynton Beach, Florida. The pilot was seriously injured. The…NTSB CEN25LA180Accident · No injuriesClass 4 · LimitedFinal reportExcalibur Excalibur · Mountain View Airport, MOAn in-flight collision with a bird while enroute.NTSB CEN22LA127Accident · No injuriesClass 4 · LimitedFinal reportQuad City Challenger II · Mountain Home, TXThe non-certificated pilot’s exceedance of the airplane’s critical angle of attack during the initial climb, which resulted in an aerodynamic stall and loss of airplane control at too low of an altitude to recover.NTSB ERA19TA114Accident · Serious injuriesFinal reportRempe Kitfox · Merritt Island, FLThe pilot's failure to maintain airplane control during an attempted go-around.NTSB WPR14LA233Accident · 1 fatalLimited investigationFinal reportNorth Wing Apache Sport · Polson, MTThe pilot’s loss of airplane control during initial climb due to his experiencing an incapacitating medical event.NTSB ERA13CA122Accident · Minor injuriesData collectionFinal reportAmirkhanian Shahram Charl Commander · Westminster, MDImpact with power lines due to the pilot’s obscured vision due to the low angle of the sun, which prevented the pilot from seeing the lines.NTSB WPR12LA214Accident · Serious injuriesLimited investigationFinal reportMarley Kolb Firestar II · Cedar Fort, UTThe pilot's failure to maintain airplane control while on approach for landing in gusting wind conditions.NTSB NYC06LA129Accident · No injuriesLimited investigationFinal reportChevrier, Armand J-3K · Charlotte, VTA complete loss of engine power on takeoff for undetermined reasons, which resulted in a forced landing.NTSB LAX86LA327Accident · No injuriesLimited investigationFinal reportCessna P210N · Coalinga, CAThe flight was a repositioning flight back to the aircraft's home base at the conclusion of an on demand air taxi flight. The pilot said that he departed without visually checking the fuel tank level. The pilot said the fuel gauges indicated one half tanks…NTSB MKC77FCQ04Accident · Minor injuriesClosedPiper PA-23 · Wichita, KS
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 ('55568')
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.
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 ('55568')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
FAA incident reports · 14
Matched to this engine model through the registry, by N-number and event date.
Accident 20260209002799APipistrel Taurus 503 · Boyton Beach, FLOn February 9, 2026, about 1514 eastern standard time, a Pipistrel taurus 503 motorglider, [privacy data omitted], was substantially damaged when it was involved in an accident at Willis Gliderport, boynton Beach, Florida after engine power loss. The…Incident 20250828011369IPatterson John F Challenger II · Honesdale, PAAircraft departed runway 18 on cherry ridge airport (N30) after 10-15 minute taxi, warmup, and runup period. During climbout the engine suddenly stopped. Pilot executed successful forced landing in cow pasture resulting in minor damage to aircraft when right…Accident 20250518005609AExcalibur Excalibur · Mountain View, MOAn experimental light sport aircraft with one passenger was flying at approximately 1500 AGL. A large bird struck the RH MLG, causing it to separate from the aircraft. The pilot began an immediate decent where he safely landed the aircraft in a grassy area.Accident 20230424004069AKolb Firestar II · Enumclaw, WAOperator of aircraft was performing high-speed and slow taxi operations and had no intentions of becoming airborne. During high-speed taxi, the aircraft engine surged and the aircraft became airbourne. The operator of the aircraft stated the engine rpm's…Accident 20220219002199AQuad City Challenger II · Mountain Home, TXNon-certificated pilot stated he took off and immediately set the aircraft back down. Then took off again and added flaps after rotation. The addition of flaps led to a nose high attitude causing the aircraft to stall. The aircraft came to rest in-between two…Incident 20210907016759IHerrick David A Challenger II · Princeton, MEOn 9/7/21 at 2142Z N142JD attempted a water landing in pocomoonshine lake with amphibious floats with the wheels extended. The aircraft flipped over after contacting the water. The pilot and sole occupant suffered minor injury. The pilot reported that he was…Accident 20190302000769ARempe Paul W Kitfox XL4 · Merritt Island, FLThe aircraft was on final to runway 11, upon touching down the aircraft bounced and veered left. Full power was applied in an attempt to abort and go-around. The aircraft then went sharply right and exited the runway into the water and sank immediately. The…Incident 20170723023609ISix Chuter SR2 · Swanzey, NHAfter taking off from a grass field, while climbing out and approaching trees at the field's edge, the aircraft engine failed. The pilot began to turn left and assessed his landing options. The pilot opted to set the aircraft down on a tree top rather than…Accident 20140607007459ANorthwing Apache Sport · Polson, MTPIC installed a wing that was not recommended by the LSA manufacturer. During test flight at approximately 150 ? 200 AGL, PIC entered a steep left turn and then into a spiraling maneuver, impacting the ground. The PIC was fatally injured and the aircraft was…Accident 20130129000639AAmirkhanian Shahram Charl Commander · Westminster, MDPilot was practicing turns over an open field. As he came around the turn the sun came out from behind the clouds and the pilot could not see forward and flew into a power line that crossed the field. Rotor blades caught the wires and the gyrocopter came down…Accident 20120517007999AMarley Thomas Jay Kolb Firestar II · Cedar Fort, UTOn approach to land at Cedar Valley Airport, the pilot was attempting to land in very high winds with strong gusts for this light aircraft. He lost control and struck the ground resulting in substantial damage to aircraft and his person.Incident 20090815015739IAmtr Firestarii · Kapolei, HI(-23) Owner plans to replace all clevis pins with standard "nas" or "an" hardware (bolts nuts & cotter pins) on wing & complete an SDR report.Accident 20060707022199AAmtr J3KITTEN · Charlotte, VT(-23) Pilot was operating from a grass strip in Charlotte, VT. Aircraft engine stopped during climbout at approximately 50 feet AGL resulting in a forced landing. Aircraft sustained substantial damage when left wing impacted a tree and underside of fuselage…Accident 19761103035289APiper PA23160 · Wichita, KSCabin door came open causing buffet. Feathered right engine-undershot runway on single engine apch.
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 ('55568')
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.
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 ('55568')
ORDER BY event_date DESC, report_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Service difficulty reports
No reports name this modelGeneral aviation reporting is voluntary.