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Lycoming IGSO-540-B1A

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Engine model · Reciprocating · 380 hp · registry code 41535

Manufacturer (registry)
LYCOMING
Model
IGSO-540-B1A
Registry code
41535
Installed in
48 registered aircraft
Type
Reciprocating
Power
380 hp
Data sheet
TCDS1E7
Holder
Lycoming Engines

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

On this page

Airworthiness directives that may apply · 13

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

1962In 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_engine_model_directive.parquet' WHERE engine_model_code IN ('41535'))
  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 ('41535'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

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Registered aircraft · 48

N103BABemidji Aviation Services Inc · Bemidji, MNBuilt 1971 · S/N LD-435N112MFMummy Mountain Med LLC · Paradise Valley, AZBuilt 1966 · S/N LP-37N114MNSutton Aircraft Salvage LLC · Palmer, AKBuilt 1965 · S/N 1553-107
See all 48 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 engine_model_code IN ('41535')
  ORDER BY n_number"

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NTSB investigations · 97

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 7 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 27 cases with NTSB’s older coding, defined in its coding manual.

NTSB CEN21LA101Accident · No injuriesClass 3 · LimitedFinal reportBeech 65-A80-8800 · Alexandria, MNThe pilot’s decision to attempt takeoff with frost covering the airplane and rotating below the published rotation speed, which led to exceedance of the airplane’s critical angle of attack and an aerodynamic stall.Dec 29, 2020 · N134BA · Substantial damageNTSB WPR19FA175Accident · 1 fatalClass 3 · FieldFinal reportRobinson R44 · Two Harbors, CAThe pilot's continued visual flight into instrument meteorological conditions, which resulted in controlled flight into terrain.Jun 18, 2019 · N7187D · DestroyedNTSB ERA18LA073Accident · No injuriesLimited investigationFinal reportAero Commander 680 F · Lapine, ALThe pilot's failure to maintain directional control during takeoff after a total loss of left engine power due to fuel contamination, which resulted in impact with trees. Contributing to the accident were the mechanic's failure to properly flush the fuel…Jan 27, 2018 · N900L · Substantial damage
See all 97 investigations
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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 ('41535')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

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FAA incident reports · 175

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

Accident 20201228016479ABeech 65-A80-8800 · Alexandria, MN2020-12-28, N134BA, a Beechcraft queen air landed in Alexandria (kaxn), MN at 1608L in the daylight. The PIC proceeded to depart the airport and arrived back after dark, around 1900L. At about the same time the [privacy data omitted] trucks were arriving to…Dec 28, 2020 · N134BA · Substantial damageIncident 20200610008039IBeech 65-80 · Burlington, COThe pilot reported smoke in cockpit shortly after leveling off at 10,000 ft. he declared an emergency with denver center, shut off all of his electrical/avionics and landed safely at Burlington, CO, kit Carson airport (kitc), the closest airport. There were…Jun 10, 2020 · N135BA · Minor damageIncident 20191108022749IMooney M20M · Nampa, IDThe airman was receiving flight training at his base airport, kman. The pilot stated that the instructor was teaching him how to more accurately hit his landing spot during emergency procedure for engine failure. The pilot stated that he was setting the trim…Nov 8, 2019 · N9155Y · Minor damage
See all 175 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 engine_model_code IN ('41535')
  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 · 8

SDR BEMA202012280001Alternator · burned outALTERNATOR IN THE NR 1 POSITION FAILED IN FLIGHT. THE MAIN POWER STUD IS ATTACHED TO A PORTION OF THE RECTIFIER PLATE JUST AFTER A 90 DEGREE BEND, BROKE OFF AND CAUSED SIGNIFICANT ARCING AND BURNING IN THE ALTERNATOR. RIGHT NEXT TO THE BEND IN THE RECTIFIER Dec 28, 2020 · N134BA · Beech 65A808800 · DC Generator-AlternatorSDR 2010F00131Cylinder · separatedFAILURE OF LOWER UNIT CYL NR 5, SEPARATED FROM CRANKCASE.Jun 2, 2010 · N114MN · Gulstm 680FL · Reciprocating Engine Power SectionSDR 2008FA0000353Shaft · lack of lubeNOSE LANDING GEAR WOULD NOT DEPLOY ON APPROACH TO LANDING. AFTER NLG REMOVAL, IT WAS DISCOVERED THAT THE NLG ACTUATOR DRIVE SHAFT PN 50820218 INTERNAL SPLINE WAS WORN AND SHEARED. LUBE POINTS ON DRIVE SHAFT TO LUBE SPLINES TO REDUCE WEAR. (K)May 16, 2008 · N6AQ · Beech 65A80 · Landing Gear ActuatorSDR KZ52002F00003Gear · strippedGEAR ON END OF ARMATURE STRIPPED CAUSING FLAPS TO BE INOPERATIVE, ALSO CAUSED CONTAMINATION TO FLAP GEARBOX.Oct 1, 2002 · N135BA · Beech 6580 · Trailing Edge Flap Control SystemSDR 98ZZZX4007Valve · failedBIL - PILOT REPORTED A LOSS OF MANIFOLD PRESSURE ON THE LT ENGINE IN CRUISE AND OIL LEAKING FROM LT ENGINE AFTER SHUT DOWN IN BILLINGS. AIRCRAFT LANDED WITHOUT INCIDENT, NO EMERGENCY DECLARED. LEFT ENGINE, NR 2 CYLINDER EXHAUST VALVE FAILED, DAMAGE CAUSED TOJun 26, 1998 · N680AC · Gulstm 680FL · Reciprocating Engine Cylinder SectionSDR 98ZZZX4008Cylinder · crackedFCA - FLT 5032 - PILOT OBSERVED NR 2 TURBO QUIT ON APPROACH, ENGINE MADE KNOCKING SOUND, AND PILOT SHUT DOWN NR 2 ENGINE. NO EMERGENCY DECLARED. AIRCRAFT LANDED WITHOUT INCIDENT. NR 2 ENGINE, NR 3 CYLINDER PARTED WITH BROKEN CYLINDER STUDS. ENGINE WILL BE Jun 10, 1998 · N4704E · Gulstm 680FL · Reciprocating Engine Cylinder SectionSDR CA960222024Magneto · faulty(CAN) WHILE COMPLYING WITH SB 643 AT FOUR YEAR INTERVAL OR ONE TIME ENGINE, IT WAS DISCOVERED BOTH MAGNETOS WERE IN NEED OF REPLACEMENT. THERE WERE NO RECORDS SHOWING WHEN RIGHT MAGNETO WAS INSTALLED AND THE LEFT ONE WAS FOUND WITH MISSING BEARING BALLS, CASE Feb 1, 1996 · Gulstm 680F · Magneto/DistributorSDR 95ZZZX5753Crankshaft · failedWHILE IN CRUISE FLIGHT, THE RIGHT ENGINE QUIT. THE PROP CONTINUED TO WINDMILL. THE PILOT FEATHERED THE PROP AND SECURED RIGHT ENGINE. AN EMERGENCY LANDING WAS COMPLETED. THE ENGINE WAS INSPECTED. THE CRANKCASE WAS CRACKED AND DISTORTED AROUND NR 6 CYLINDEJun 27, 1995 · N114MN · Gulstm 680FL · Reciprocating Engine Power Section
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 = 'IGSO540B1A'
  ORDER BY difficulty_date DESC"

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STCs that may be installed · 19

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.

STC SE04349CHInstallation of SureFly electronic ignitionSureFly Partners Ltd.STC SE01954SEInstallation of engine crankcase seal.Ly-Con Rebuilding CompanySTC SE03309CHInstallation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt applicationHartzell Propeller Inc.
See all 19 STCs
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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 ('41535')
    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.