Continental TSIO-520-NB airworthiness directives

Airworthiness directives that may apply · 29

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

1979In forceSuperseded2026

ADs by the year they took effect: 31 ADs
1979	1
1980	1
1981	2
1982	1
1988	2
1990	1
1991	1
1993	3
1996	1
1998	1
1999	1
2000	1
2004	1
2007	1
2009	2
2010	1
2011	1
2012	2
2014	1
2016	1
2022	1
2023	4

Engine · Continental TSIO-520-NB

AD 2023-17-04Reciprocating Engine Oil SystemEffective Oct 26, 2023 · Supersedes AD 2022-04-04 AD 2023-05-16Reciprocating Engine Power SectionEffective Mar 15, 2023 · Supersedes AD 2023-04-08 AD 2023-02-12Engine Air Intake SystemEffective Feb 17, 2023

See all 36 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 ('17265'))
  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 ('17265'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC

Run 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.

Information bulletins that may apply · 10

Engine · Continental TSIO-520-NB

SAIB NE-20-05POWERPLANT - Engine Camshaft Gear Tooth FractureIssued Apr 6, 2020 SAIB NE-18-16POWERPLANT Alternator Drive CouplingIssued Jun 20, 2018 SAIB NE-17-11POWERPLANT Engine damage as a result of kickbackIssued May 10, 2017 SAIB NE-16-13Powerplant - Prohibited use of sealantIssued Mar 8, 2016 SAIB NE-13-15Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control LeversIssued Feb 8, 2013 SAIB NE-13-04Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing InspectionIssued Oct 31, 2012 SAIB NE-10-09Reciprocating Engine Power Section: Hydraulic Valve LiftersIssued Nov 20, 2009 SAIB NE-10-07Reciprocating Engine Cylinder: Identification Information for Superior Air Parts, PMA Cylinder Heads for Teledyne Continental Motors (TCM) IO-520, TSIO-520,and IO-550 Series Engines.Issued Nov 2, 2009 SAIB NE-09-08Reciprocating Engine Cylinder SectionIssued Jan 30, 2009 SAIB NE-07-09R1Periodic Inspections of ECi Cylinder Assemblies for Cracks in the Aluminum HeadIssued Mar 21, 2007

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 ('17265'))
  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.

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 ('17265'))
GROUP BY s.saib_number ORDER BY issue_date DESC

Run 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 · 52

N1173WScupham R K · West Des Moines, IABuilt 1983 · S/N 25-0731 N1234WCuellar Mauricio Dominguez · Tampa, FLBuilt 1970 · S/N 414-0043 N134GGGibson Gordon S Trustee · Pacific Palisades, CABuilt 1981 · S/N 340A1202

See all 52 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 ('17265')
  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.

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 ('17265')
ORDER BY n_number

Run 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.

NTSB investigations · 5

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

Defining event, 2008 on

Of 3 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

NTSB WPR22FA309Accident · 3 fatalClass 3 · FieldFinal reportCessna 340A · Watsonville, CAThe failure of the pilot of the multi-engine airplane to see and avoid the single-engine airplane while performing a straight-in approach for landing.Aug 18, 2022 · N740WJ · 2 aircraft · Destroyed NTSB GAA22WA093Incident · No injuriesClass 4 · ForeignCessna 340A · Bussy-Lettrée, FranceFeb 6, 2022 · N340YZ · No damage NTSB CEN14WA248Accident · No injuriesForeign investigationCessna 340 · Toussus-Le-Noble, FranceFeb 18, 2014 · N876DT · Substantial damage NTSB CEN12WA664Accident · 6 fatalForeign investigationCessna 414A · Innsbruck, AustriaSep 30, 2012 · N738W · Destroyed NTSB MKC79FCJ09Accident · No injuriesClosedCessna 414A · Lincoln, NEFeb 17, 1979 · N30FB · Substantial damage

Query with SQL

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 ('17265') ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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 ('17265')
  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.

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 ('17265')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run 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.

FAA incident reports · 8

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

Incident 20240830012979ICessna 414A · Tulsa, OKDuring crusie level flight at 16K rapid decompression, the front right windscreen was completely blew out, diverted, landed without further incident. The damage is minor and evnet classifed as an incident.Aug 30, 2024 · N8789B · Minor damage Incident 20220224012059ICessna 414 · Charleston, SCPilot landed on runway 15, made a right turn onto taxiway a, followed by a left turn onto taxiway g. he informed ground that he thought he might have run over something on the taxiway. Airport ground crews later found a destroyed taxiway edge light on the…Feb 24, 2022 · N414KH · Minor damage Incident 20190516004749ICessna 414 · Fort Lauderdale, FL1. Description of incident: airplane was being taxied from hanger to runway 09. While on taxi way "b" to taxi way "e" the pilot applied the brakes and the airplane turned hard to the right and went into the grass leaving taxi way "b" at intersection "e & b"…May 16, 2019 · N414TN · Minor damage Incident 20170818015839ICessna 414A · Muscle Shoals, ALWhile at 15,000 ft. MSL, en route from kmkl to kdts , the right engine manifold pressure decayed. The right manifold pressure began to increase with right throttle advancement. The pilot heard a loud bang from the right engine and observed oil streaming from…Aug 18, 2017 · N8789B · Minor damage Incident 20160512006409ICessna 414A · Norfolk, NEPilot reported that while performing touch and goes in N379TW, Cessna 414A, at the Norfolk regional airport (ofk), the aircraft propellers contacted the runway. After a go around the aircraft landed without further incident.May 12, 2016 · N379TW · Minor damage Incident 20140311002619ICessna 414 · Lantana, FLAircraft landed on paved runway "touchdown zone" and the left main gear collasped. Aircraft slid down the runway then veared off the right side of runway into the grass where the right main gear collasped at palm beach county park airport in Lantana, FL. The…Mar 11, 2014 · N606PP · Minor damage Incident 19860622061259ICessna 414 · Port Aransas, TXAircraft wing tip struck parked aircraft during taxi.Jun 22, 1986 · N414TF · Minor damage Accident 19790217005789ACessna 414A · Lincoln, NEPilot's attention was diverted during take-off and aircraft hit snowbank. IFR conditions existed.Feb 17, 1979 · N30FB · Substantial damage

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 ('17265')
  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.

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 ('17265')
ORDER BY event_date DESC, report_number DESC

Run 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.

Service difficulty reports · 310

SDR 2025F00273Support · corrodedDURING A PREFLIGHT WALKAROUND, SURFACE CORROSION WAS OBSERVED ON THE VERTICAL STABILIZER AFT SECTION. AFTER CLOSER INSPECTION SEVERE DELAMINATION WAS SEEN ON THE AFT VERTICAL SUPPORT ANGLES AND AFT STAB BULKHEAD SECTION. THE RUDDER TRIM TAB BRACKET ALSO HAD SINov 26, 2025 · N86VS · Cessna 414 · Vertical Stabilizer Miscellaneous Structure SDR KISA202602050001Angle · corrodedDURING A PREFLIGHT WALK AROUND CORROSION WAS OBSERVED ON THE AFT SPAR ANGLE CHANNEL OF THE VERTICAL STABILIZER. UPON FURTHER INVESTIGATION SIGNIFICANT INTERGRANULAR CORROSION WAS FOUND RESULTING IN EXFOLIATION OF THE SURFACE OT THE SPAR ANGLE. THIS RESULTED INNov 25, 2025 · N86VS · Cessna 414 · Vertical Stabilizer Miscellaneous Structure SDR 2025FA0000646Intake Duct · rupturedR/H ENGINE MP WILL NOT GO OVER 32 INCHES ABOVE 15,000. PRESSURE TESTED THE RH ENGINE INTAKE SYSTEM AND FOUND THE REAR INTAKE PIPE TORN.Sep 16, 2025 · N6305X · Cessna 340A · Engine Air Intake System

See all 310 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 = 'TSIO520NB'
  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.

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 = 'TSIO520NB'
ORDER BY difficulty_date DESC

Run 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.

STCs that may be installed · 66

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 SE5583SWInstallation of fuel flow transducers (true-flow totalizer).Alcor LLC · Lists TSIO-520 Series STC SE04349CHInstallation of SureFly electronic ignitionSureFly Partners Ltd.STC SE02352CHInstallation of Challenger cleanable oil filter assemblyChallenger Aviation Products Inc.

See all 66 STCs

Query with SQL

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 ('17265') 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

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 ('17265')
    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 ('17265')
  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

Run 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.