Engine model · Reciprocating · 150 hp · registry code 42127

Manufacturer (registry)
LYCOMING
Model
O-320-E3D
Registry code
42127
Type
Reciprocating
Power
150 hp
Data sheet
TCDSE-274
Holder
Lycoming Engines

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

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Airworthiness directives that may apply · 23

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

1967In forceSuperseded2026
ADs by the year they took effect: 27 ADs
19671
19691
19772
19801
19811
19821
19891
19911
19921
19931
19962
19971
19983
20041
20062
20071
20081
20101
20121
20171
20241
20261
See all 27 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 ('42127'))
  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 · 5

Historical bulletins · 1
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 ('42127'))
  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 · 65

See all 65 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 ('42127')
  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 · 13

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

NTSB CEN25LA393Accident · No injuriesClass 4 · LimitedFinal reportFloyd G Halderman JR RV-6 · Cambridge, MNThe pilot’s continued operation of the faulty fuel selector valve which resulted in a loss of engine power due to fuel starvation. Contributing to the accident was the degraded operation of the fuel selector valve and the pilot’s poor decision to operate the…Sep 25, 2025 · N851FH · Substantial damageNTSB ERA24LA277Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-151 · Fire Island, NYA total loss of engine power for undetermined reasons.Jun 24, 2024 · N890MA · Substantial damageNTSB ERA24LA051Accident · No injuriesClass 3 · LimitedFinal reportLancair 235 · Stuart, FLA landing gear collapse due to a hydraulic fluid leak in the landing gear system.Nov 28, 2023 · N235N · Substantial damageNTSB ERA16LA281Accident · Serious injuriesLimited investigationFinal reportVans RV4 · Shelbyville, KYThe partial loss of engine power due to carburetor icing. Contributing to the accident was the pilot’s failure to effectively use carburetor heat.Aug 7, 2016 · N924WZ · Substantial damageNTSB ERA15LA344Accident · Serious injuriesLimited investigationFinal reportEasterwood Mark W RV 6A · Rome, GAThe pilot's inadequate preflight inspection and fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.Sep 7, 2015 · N555TN · Substantial damageNTSB CEN14LA241Accident · Serious injuriesLimited investigationFinal reportKinsler Arthur Paul Kinsler Lancair/Mkii · Crivitz, WIThe improper installation of the hose fuel fitting, which resulted in the fitting becoming disconnected and the subsequent loss of engine power due to fuel starvation.May 6, 2014 · N246AK · Substantial damageNTSB CEN09LA196Accident · 1 fatalLimited investigationFinal reportFritz RV3-A · Greencastle, INA partial loss of engine power for undetermined reasons and the pilot's failure to maintain aircraft control during the emergency descent.Mar 7, 2009 · N933WF · Substantial damageNTSB NYC06CA012Accident · No injuriesData collectionFinal reportWeber Glastar · Summersville, WVa loss of engine power due to a stuck carburetor float needle.Oct 19, 2005 · N722W · Substantial damageNTSB NYC04CA018Accident · No injuriesData collectionFinal reportPiper PA-28-140 · Mansfield, MAThe pilot's failure to maintain directional control while landing.Oct 28, 2003 · N33532 · Substantial damageNTSB NYC95LA086Accident · No injuriesLimited investigationFinal reportPiper PA-28-151 · Wilmington, OHThe flight instructor's inadequate supervision of the student pilot during the approach, resulting in a loss of control and hard landing. The gusty wind condition was a factor.Apr 11, 1995 · N32145 · Substantial damageNTSB NYC90LA204Accident · No injuriesLimited investigationFinal reportPiper PA-28-151 · Farmingdale, NJThe failure of the pilot of N8564F to insure the runway was clear prior to crossing.Aug 25, 1990 · N8564F · 2 aircraft · Substantial damageNTSB CHI84LA163Accident · No injuriesLimited investigationFinal reportWilliam Freeman Glasair · Lambertville, MIThe plt stated that during takeoff, the acft weather vaned into the wind and the left main landing gear went off the rwy. When the acft hit soft plowed dirt after leaving the rwy, it nosed over.Apr 26, 1984 · N83BJ · Substantial damageNTSB LAX79D4Q22Accident · No injuriesClosedPiper PA-28 · Simi Valley, CAMar 30, 1979 · N3451Q · Substantial damage
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 ('42127')
  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 · 24

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

See all 24 incident reports
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 ('42127')
  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 · 115

See all 115 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 = 'O320E3D'
  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 · 49

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 49 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 ('42127')
    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.