Alon A-2A

Aircraft model · Fixed wing single engine · Airplane · registry code 0540104

Manufacturer (registry)
ALON
Model
A-2A
Registry code
0540104
Registered
21 aircraft
Type
Fixed wing single engine
Engines
1 · Reciprocating
Seats
2
Weight class
Up to 12,499 lb
Cruise speed
93 mph
Certification
Type certificated
Data sheet
TCDSA-787
Holder
Univair Aircraft Corporation

Model codes come from the FAA registry’s reference file. ADs are matched to them by model name and maker.

On this page

Aircraft by year built · 32

1966Registered nowDeregistered2026
Aircraft by the year they were built: 32 aircraft
19661
196717
196814

Airworthiness directives that may apply · 5

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

1995In forceSuperseded2026
ADs by the year they took effect: 6 ADs
19951
19961
20032
20121
20221
Superseded and historical ADs · 1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_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('0540104'))
  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 · 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_aircraft_model_saib.parquet' WHERE aircraft_model_code IN ('0540104'))
  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 · 21

See all 21 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 aircraft_model_code IN ('0540104')
  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 · 16

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

Defining event, 2008 on

Of 2 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 2 cases with NTSB’s older coding, defined in its coding manual.

See all 16 investigations
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.aircraft_model_code IN ('0540104')
  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 · 8

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

Accident 20251219020469AAlon A-2A · Winter Haven, FLUpon landing aircoupe at kgif, runway 23 at 9:18 am EST on December 19, 2025, while attempting to maintain directional control on the runway, a loud “snap” occurred, seemingly emanating from under the forward floorboard or lower engine compartment, after…Dec 19, 2025 · N818SW · Substantial damageAccident 20110731016069AAlon A-2A · Rolfe, IAThe airman was traveling from the eaa airventure exposition at oshkosh, WI on 7/31/2011, when he experienced a loss of power with his aircraft. He attempted to correct the problem by applying carburator heat. The aircraft appeared to run better at first, then…Jul 31, 2011 · N5647F · Substantial damageAccident 20050820034099AUnivar A2AALON · Helena, MT(-23) N5467F departed from the Helena, Montana, airport on runway 27. The pilot stated that while climbing to approximately 100 feet AGL, the engine started running rough followed by a partial loss of power. He attempted a left turn back to the runway; about…Aug 20, 2005 · N5467F · Substantial damageAccident 19990821043119AN5465F · Cabot, AR(-23) On August 21, 1999 at 19:08 pm CDT, a single engine a/c, model Mooney A2A, alon-415-A2A, N5465F, operated and registered to criswell corporation. The pilot made an emergency landing short of a private grass strip 1 mile south of Cabot, AR. On hwy 89.…Aug 21, 1999 · N5465F · No damageIncident 19920402008259IUnivar A2AALON · Columbus, MTEngine failed after takeoff. Emergency landing. Unable to find cause of engine stoppage.Apr 2, 1992 · N5467F · Minor damageIncident 19790924050319IUnivar A2AALON · Scappoose, ORSmoke in cockpit due to ruptured line to oil pressure indicator. Oil was spilled on the exhaust stack.Sep 24, 1979 · N5459FAccident 19740831029749AUnivar A2AALON · Harrisburg, NEPracticing lo alt maneuvers. Lndd in wheat fld.Aug 31, 1974 · N5647F · Substantial damageAccident 19730113001159AUnivar A2AALON · Gray Mtn Tr, AZHit cross arm of pwr line twr 105 ft AGL in fog.Jan 13, 1973 · N5469F · Destroyed · 1 fatal
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 aircraft_model_code IN ('0540104')
  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

No reports name this modelGeneral aviation reporting is voluntary.

STCs that may be installed · 63

Approved for this 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 63 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_aircraft_model_stc.parquet'
    WHERE aircraft_model_code IN ('0540104')
    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.

The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

Query with SQL
duckdb -csv -c "SELECT m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.aircraft_model_code = m.code
  WHERE m.match_key = 'A2A' AND m.code NOT IN ('0540104')
  GROUP BY ALL
  ORDER BY aircraft DESC
  LIMIT 12"

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.