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Lycoming ALF502R-5

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Engine model · Turbo-fan · registry code 41624

Manufacturer (registry)
LYCOMING
Model
ALF502R-5
Registry code
41624
Installed in
4 registered aircraft
Type
Turbo-fan
Power
6,970 lb thrust
Data sheet
TCDSE6NE
Holder
CFS Aeroproducts Inc.

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

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Airworthiness directives that may apply · 18

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

1987In forceSuperseded2026
See all 21 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 ('41624'))
  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 · 4

N472NANeptune Aviation Services Inc · Missoula, MTBuilt 1989 · S/N E2138N473NANeptune Aviation Services Inc · Missoula, MTBuilt 1985 · S/N E2045N477NANeptune Aviation Services · Missoula, MTBuilt 1988 · S/N E2103N478NANeptune Aviation Services Inc · Missoula, MTBuilt 1987 · S/N E2074
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 ('41624')
  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 · 784

SDR NI6R201809030051Engine · malfunctionedDURING TAKEOFF ROLL AT APPROX. 90KTS A MASTER CAUTION (AMBER ALERT) WAS TRIGGERED BY THE NR 1 GENERATOR DROPPING OFFLINE, FOLLOWED SHORTLY BY A MASTER WARNING (RED ALERT) TRIGGERED BY LOW OIL PRESSURE ON THE NR 1 ENGINE. THE CALL WAS MADE TO CONTINUE INTO THEAug 29, 2018 · N475NA · Bac 146200A · Engine (Turbine/Turboprop)SDR NI6R2018071600049Pickup · brokenDURING CLIMB, CREW NOTED THE NR 1 ENGINE INDICATED EXCESSIVE VIBRATION. SECURED THE NR 1 ENGINE AND RETURNED TO AIRPORT. INITIAL INSPECTION FOUND THE OVERSPEED PICKUP RING HAD FAILED.Jul 13, 2018 · N473NA · Bac 146200A · Turbine SectionSDR NI6R201706130040Engine · malfunctionedAFTER BRAKE RELEASE FOR TAKE OFF AND BEGINNING ROLL, THE NR 3 ENGINE N1 & N2 STARTED ROLLING BACK AND TGT INCREASED TO 932 DEGREES C. TAKE OFF WAS ABORTED, ENGINE SHUT DOWN, AND AIRCRAFT RETURNED TO PARKING.Jun 13, 2017 · N476NA · Bac 146200A · Engine (Turbine/Turboprop)
See all 784 difficulty reports
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 = 'ALF502R5'
  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.