Engine model · Reciprocating · 325 hp · registry code 41975

Manufacturer (registry)
LYCOMING
Model
LTIO-540-F2BD
Registry code
41975
Type
Reciprocating
Power
325 hp
Data sheet
TCDSE14EA
Holder
Lycoming Engines

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

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Airworthiness directives that may apply · 19

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

1978In forceSuperseded2026
ADs by the year they took effect: 28 ADs
19781
19791
19831
19911
19921
19951
19972
19981
20023
20032
20042
20061
20082
20091
20101
20111
20123
20151
20241
20261
See all 33 ADs
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 ('41975'))
  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.

Information bulletins that may apply · 6

Historical bulletins · 2
Query with SQL
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 ('41975'))
  GROUP BY s.saib_number ORDER BY issue_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.

Registered aircraft · 1

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 ('41975')
  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

No NTSB investigations matched to aircraft with this engine modelMatched through the registry by N-number, so foreign aircraft and some older cases aren’t counted.

FAA incident reports

No reports matched to aircraft with this engine modelMatched through the registry by N-number, so foreign aircraft and some older reports aren’t counted.

Service difficulty reports · 14

SDR 2020FA0000411Cylinder Head · failedPILOT REPORTED ENGINE NOT MAKING POWER. FOUND EXHAUST ROCKER SHAFT HOLDER BROKEN AND NO LONGER ATTACHED TO CYLINDER ASSEMBLY. CAUSING EXHAUST VALVE TO NOT OPEN WHEN REQUIRED.Jun 7, 2020 · N423AC · Piper PA31325 · Reciprocating Engine Cylinder SectionSDR CA151105007Spring · worn(CAN) AT THE PREVIOUS OVERHAUL THE LATCH SPRINGS WERE NOT REPLACED. REPLACEMENT IS MANDATORY IAW MANUAL #117D.Nov 4, 2015 · Piper PA31325 · Propeller Hub SectionSDR CA150107003Latch · detached(CAN) THE ALTERNATE AIR BOX MAGNETIC DOOR LATCH CAME OFF AND WENT THROUGH THE TURBOCHARGER. IT APPEARS THAT THERE WAS A CRACK EAR THE LATCH THAT STARTED THE FAULT.Dec 18, 2014 · Piper PA31325 · Exhaust TurbochargerSDR CA100529003Turbocharger · leaking(CAN) TOWER NOTED SMOKE RIGHT AFTER LANDING. INSP FOUND OIL FILTER HOUSING GASKET TO BE LEAKING. GASKET, N06B23072, WAS REPLACED AND A GROUND RUN WAS CARRIED OUT, NO MORE LEAKS WERE FOUND. ACFT WAS FLOWN & THEN FLOWN BACK TO BASE (5MIN AWAY). THE NEXT DAY IMay 25, 2010 · Piper PA31325 · Exhaust TurbochargerSDR 2008FA0000579Reservoir · lowON FINAL APPROACH THE LANDING GEAR HANDLE WAS PLACED IN THE DOWN POSITION. THE GEAR WAS VIEWED IN THE MIRROR AT 45 DEGREE ANGLE. THERE WERE NO GREEN LIGHTS INDICATING GEAR DOWN AND LOCKED. THE PILOT TRIED TO RAISE AND LOWER THE GEAR AGAIN WITH NO MOVEMENT EIJun 10, 2008 · N727HB · Piper PA31325 · Hydraulic Reservoir, MainSDR CA050913006Hose · ruptured(CAN) PILOT NOTICE HYDRAULIC FLUID LEAKING FROM RT LOWER FUSELAGE TO WING FAIRING AFT MAIN SPAR. AP ON INSPECTION, FOUND LANDING GEAR HOSE RUPTURED. REPAIRED HOSE ASSY P/N 17766-02 BY REPLACING HOSE.Aug 31, 2005 · Piper PA31325 · Hydraulic System, MainSDR CA050511003Wire · shorted(CAN) AFTER TAKE OFF GEAR SELECTOR HANDLE STUCK IN UP POSITION. PILOT MADE AN UNSHEDULED LANDING. FOUND LEFT GEAR SQUAT SWITCH WIRE SHORTING ON SCISSOR BOLT CETTER PIN.REPAIRED WIRING AND COMPLETED FIVE FAULT FREE GEAR CYCLES.May 6, 2005 · Piper PA31325 · Landing Gear Retraction/Extension SystemSDR CA041001002Downlock Arm · stuck(CAN) LT GEAR DOWN LOCK ROD FOUND STUCK IN RETACT POSITION. REMOVED ROD, CLEANED LUBRICATED AND CYCLED LANDING GEAR.Sep 21, 2004 · Piper PA31325 · Landing Gear Retraction/Extension SystemSDR CA030724007Shaft · sheared(CAN) AFTER TAKEOFF, PILOT NOTICED A LOSS OF MANIFOLD PRESS ON RT ENG. RETURNED TO AIRPORT. SAW FLAMES, SHUTDOWN & FEATHERED PROP. LANDING UNEVENTFUL. DURING TAXI & AFTER STOP, ENG CONTINUED TO SMOKE. DURING INSPECT, OIL COVERED EXHAUST & TURBOCHARGER. COMPRESJul 22, 2003 · Piper PA31325 · Exhaust TurbochargerSDR CA020109006Combustion Liner · burned(CAN) PILOT SMELLED FUMES IN THE CABIN. HE SHUT OFF THE JANITROL HEATER. HEATER WAS REMOVED AND INSPECTED FOUND A HOLE BURNED THROUGH COMBUSTION TUBE. INSTALLED NEW OVERHAULED HEATER.Dec 21, 2001 · Piper PA31325 · Heating SystemSDR 99ZZZX376Bolt · failedPILOT REPORTED RT ENGINE RUNS ROUGH. FOUND NO COMPRESSION NR 6 CYLINDER. FOUND METAL IN MAIN OIL SCREEN. FOUND NR 6 ROD BOLT BROKEN AND CONNECTING ROD BROKEN LOOSE FROM CRANKSHAFT. MAJOR DAMAGE TO CRANKCASE, CRANKSHAFT, ROD, AND CYLINDERS. SUBMITTER SUSPEDec 7, 1998 · N24MG · Piper PA31325 · Reciprocating Engine Cylinder SectionSDR 98ZZZX3057Coil · failedNOTICED A RISE IN EGT ABOUT 15 MINUTES FROM (38D). RT ENGINE RUNNING SMOOTH. CHECKED RT MAGNETO AFTER LANDING AND FOUND RT SIDE DEAD. ON INSPECTION OF MAGNETO, FOUND A CRACK AND A BURNED AREA WHERE COIL WAS ARCING TO CASE OF MAG. SAME PROBLEM HAD OCCURRED Jul 22, 1998 · N62992 · Piper PA31325 · Magneto/DistributorSDR AU970585Camshaft · cracked(AUS) ENGINE CAMSHAFT LOBE CASE HARDENING CRACKED - COUNTERWEIGHT BUSHINGS WORNMay 29, 1997 · Piper PA31325 · Reciprocating Engine Power SectionSDR 96ZZZX2384Filter · failedSUBJECT FILTER REMOVED FROM AIRCRAFT AFTER 6 MONTHS AND 200 HOURS. FAILURE OF FILTER RESULTED IN FAILURE OF PILOT'S KFC 200 ATTITUDE INDICATOR, COPILOT'S ATTITUDE INDICATOR, AND DIRECTIONAL GYRO. THE CAUSE OF THE PROBLEM WAS A DETERIORATING PRESSURE PUMP 442Mar 18, 1996 · N27934 · Piper PA31325 · Pitot/Static 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 = 'LTIO540F2BD'
  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 · 28

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.

See all 28 STCs
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 ('41975')
    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 · 1,000+

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 1,000+ 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 ('E14EA')
    AND len(list_intersect(tcds_models, ['LTIO-540-F2BD'])) > 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.