- Manufacturer (registry)
- ALLISON
- Model
- 250-C20R/4
- Registry code
- 03093
- Installed in
- 0 registered aircraft
- Type
- Turbo-shaft
- Power
- 450 hp
- Data sheet
- TCDSE4CE
- Holder
- Rolls-Royce Corporation
Model codes come from the FAA registry’s reference file.
On this page
Airworthiness directives that may apply · 9
ADs whose products match this engine model. Each AD’s applicability may narrow it by serial number, part number or configuration.
| 1977 | 1 |
|---|---|
| 1982 | 1 |
| 1989 | 1 |
| 1996 | 1 |
| 1999 | 1 |
| 2005 | 1 |
| 2006 | 2 |
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2022 | 1 |
Engine · Allison 250-C20R/4
AD 2022-10-06Turbine SectionAD 2018-13-01Turbine GovernorAD 2006-16-04Inspection of the fuel nozzle screenAD 2006-13-06Gas producer rotor assembly tie boltsAD 98-24-28Main Fuel Control BellowsAD 96-19-01Superior Air Parts Manufacture Approval (PMA) BearingsAD 88-17-01Fuel ControlsAD 82-24-05Control Assembly and Power Turbine Governor AssemblyAD 77-15-12Power Turbine Coupling NutSuperseded and historical ADs · 3
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 ('03093'))
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.
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 ('03093'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Registered aircraft · 0
No aircraft currently registered with this engine model
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
No reports name this modelGeneral aviation reporting is voluntary.
STCs that may be installed · 5
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 SE5511NMInstallation of compressor discharge pressue (PC) valve.STC SE00014ENInstallation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models.STC SE00027ENInstallation of Pratt & Whitney Engine Services Inc. Intellistart plus electronic control unit (ECU), P/N DPU-K-010 on the specified 250 engine models.STC ST00037ATUnison igniter plugs, P/N 9044400-1.STC SQ00338ATUnison igniter leads, P/N9048222-101, 102, 103, 104, 105, 106.
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 ('03093')
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.
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 ('03093')
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_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.