Engine model · Reciprocating · 210 hp · registry code 41602

Manufacturer (registry)
LYCOMING
Model
IO-390-A1A6
Registry code
41602
Type
Reciprocating
Power
210 hp
Data sheet
TCDSE00006NY
Holder
Lycoming Engines

Model codes come from the FAA registry’s reference file.

On this page

Airworthiness directives that may apply · 4

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

2009In forceSuperseded2026
ADs by the year they took effect: 5 ADs
20091
20122
20241
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Superseded and historical ADs · 1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 ('41602'))
  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 · 2

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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_engine_model_saib.parquet' WHERE engine_model_code IN ('41602'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 20

See all 20 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 ('41602')
  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 · 1

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

Defining event, 2008 on

Of 1 case 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

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 ('41602')
  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.

Incident 20221009016019ILake LA-4-200 · Oshkosh, WIOn October 09, 2022 at approximately 1617 local time, a Lake LA-4-200 amphibious aircraft on a VFR flight landed at wittman regional airport Oshkosh, WI. The aircraft was cleared by air traffic for runway 9. When the aircraft made contact with the hard runway…Oct 9, 2022 · N53JN · Minor damageAccident 20180424004079ABrown Joseph Sportsman GS-2 · Swan Lake, MTAirman attempted a landing at a back country strip made a few fly overs and observed tracks in the snow estimated it to be a few inches think. Airman touched down and immediately fliped over on his back due to the deep snow.Apr 24, 2018 · N454HP · Substantial damageIncident 19960702020429IGulstm 112A · Atlanta, GANarrative: aircraft landed with nose gear up after several attempts to lower the gear. [privacy data omitted]Jul 2, 1996 · N1443J · Minor damageIncident 19950324008369IGulstm 112A · Ashland, VANarrative: on 03-24-95, at 1645L, aircraft landed on runway 34 at the Hanover county airport. The aircraft landed mid-field with the landing gear fully retracted. The aircraft skidded on the center line, approximately 100 feet. Minor damage occurred. An on…Mar 24, 1995 · N1443J · Minor damageIncident 19890923055859ICessna 177RG · New Smyrna Beac, FLFuel odor in cockpit. Engine quit. Forced landing on highway. Found broken standpipe in firewall fuel strainer.Sep 23, 1989 · N53061Incident 19821201066479ICessna 177RG · Cullman, ALRough engine. Vectored to an airport. Engine quit on final. Landed gear up. Loose fuel line and intake pipes.Dec 1, 1982 · N53061 · Minor damageIncident 19811212085139IMooney M20J · Rhinelander, WIStruck tree tops on final for night landing. Landed on runway after impact. Landing light inoperative prior flight.Dec 12, 1981 · N1142G · Minor damage
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 ('41602')
  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 · 5

SDR 2026FA0000903Pushrod · bentNR 2 EGT SLOW TO RISE, UPON RUN UP, FOUND DIFFICULT TO START, ENGINE RUNNING VERY ROUGH WITH POOR ACCELERATION. FOUND NR 2 PUSH ROD AND SHROUD BENT. REAMED ALL EXHAUST VALVE GUIDES IAW LYC SI1485B, MSB 388C, SI1425A, AND THE LYC IO390-CMM. REINSTALLED THE VOct 7, 2026 · N715ML · Cirrus SR20 · Reciprocating Engine Cylinder SectionSDR 2026FA0000578Magneto · failedPILOT REPORTED NO START. MAINTENANCE CONFIRMED NO START. CHECKED POWER TO SLICK START, OKAY. CHECKED MAGNETO TO ENGINE TIMING, FOUND LEFT MAGNETO POINTS NOT OPENING. FOUND FACTORY PUTTY BROKEN ON LEFT MAGNETO.Apr 27, 2026 · N662JJ · Cirrus SR20 · Magneto/DistributorSDR 2025FA0000650Jam-Nut · undertorquedFLAP ACTUATOR ROD END SEPARATED FROM ACTUATOR ASSEMBLY RESULTING IN LOSS OF FLAP OPERATION DURING FLIGHT. IT IS LIKELY THE JAMB NUT RETAINING THE ROD END WAS NOT PROPERLY TORQUED AND THE THE ROD END UNSCREWED FROM THE ACTUATOR MOTOR. IT IS UNKNOWN IF ANY FIELSep 17, 2025 · N32CF · Cirrus SR20 · Trailing Edge Flap ActuatorSDR 2024FA0000943Exhaust Valve · brokenTURNING DOWNWIND FROM CROSSWIND THERE WAS A SINKING FEELING TO THE PLANE IN WHICH I TOOK OVER CONTROLS IMMEDIATELY CHECKED TO SEE IF POWER WAS FULL. THE POWER HANDLE WAS FULL BUT IT FELT AS IF WE HAD A LOSS OF THRUST, THEN THE RPM’S BEGAN TO RAPIDLY DROP AND SDec 6, 2024 · N803E · Cirrus SR20 · Reciprocating Engine Cylinder SectionSDR 2018FA0000517Air Box · crackedMULTIPLE PORTIONS OF AIR FILTER HOUSING, PN 31026-002, CRACKED AND SEPARATED FROM REST OF HOUSING DOWN STREAM OF AIR FILTER. AREA OF DETERIORATION IS ON UPPER, BACK SIDE OF AIR BOX AGAINST ENG BAFFLING AND IS NOT EASILY VIEWABLE WITHOUT REMOVING AIR FILTER HOSep 12, 2018 · N123ZM · Cirrus SR20 · Engine Air Intake System
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 engine_model_key = 'IO390A1A6'
  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 · 5

Approved for this engine 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.

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_engine_model_stc.parquet'
    WHERE engine_model_code IN ('41602')
    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.

PMA parts · 685

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first.

See all 685 PMA parts
Query with SQL
duckdb -csv -c "SELECT drs_guid, part_number, part_name, holder, pma_number, replaces_part, supplement_date, tcds_models
  FROM 'https://openairdocs.org/data/latest/faa_type_certificate_pma.parquet'
  WHERE tcds_number IN ('E00006NY')
    AND len(list_intersect(tcds_models, ['IO-390-A1A6'])) > 0
  ORDER BY supplement_date DESC, drs_guid 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.