# N503T: 2015 Flight Design CTLS

- Status: Valid registration
- Airframe: [Flight Design CTLS](https://openairdocs.org/model/flight-design-ctls) (registry code 060005B, 2 seats)
- Engine: [Rotax 912 IS series](https://openairdocs.org/engine/rotax-912-is-series) (registry code 55593)
- Data sheets: [TCDS E00051EN](https://openairdocs.org/tcds/E00051EN) (BRP-Rotax GmbH & Co KG) (OpenAirDocs)
- Serial number: F-15-08-51
- Year built: 2015
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Light sport, airplane
- Airworthiness date: June 3, 2016
- Certificate issued: August 2, 2023
- Expires: August 31, 2030
- Mode S code: A646BE
- Owner type: LLC
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=503T
- Page: https://openairdocs.org/aircraft/N503T

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Rotax 912 IS model are included.

## ADs that may apply (OpenAirDocs): 3 in force

### Matched by airframe (Flight Design CTLS)

None in force.

### Matched by engine (Rotax 912 IS series)

- [AD 2026-16-11](https://openairdocs.org/ad/2026-16-11): Reciprocating Engine Front Section · BRP-Rotax 912 F2, 912 F3, 912 F4 and 16 more. Effective Aug 28, 2026
- [AD 2025-15-03](https://openairdocs.org/ad/2025-15-03): Reciprocating Engine Oil System · BRP-Rotax 912 iSc2 Sport, 912 iSc3 Sport, 915 iSc2 C24 and 1 more. Effective Aug 6, 2025
- [AD 2023-17-13](https://openairdocs.org/ad/2023-17-13): Reciprocating Engine Front Section · BRP-Rotax 912 F2, 912 F3, 912 F4 and 16 more. Effective Sep 20, 2023

### Historical (superseded or no longer in force)

- [AD 2025-07-02](https://openairdocs.org/ad/2025-07-02) (historical): Reciprocating Engine Oil System · BRP-Rotax 912 iSc2 Sport, 912 iSc3 Sport, 915 iSc2 C24 and 1 more. Effective Apr 21, 2025

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N503T.

## FAA accident and incident reports

None matched to N503T.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## Service difficulty reports on N503T not matched to an aircraft (2)

They name N503T, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR 95ZZZX1258](https://openairdocs.org/sdr/95ZZZX1258), Feb 17, 1995: POTENTIOMETER. SHAFT SHEARED. DURING REPLACEMENT OF LT ELEVATOR DUE TO LIGHTNING STRIKE DAMAGE, DISCOVERED POTENTIOMETER FOR F.D.R. ELEVATOR POSITION SHAFT WAS SHEARED. REPLACED POTENTIOMETE
- [SDR 95ZZZX1257](https://openairdocs.org/sdr/95ZZZX1257), Feb 17, 1995: CONTROL. FAILED. RT FIRE WARNING FAILED TO TEST DURING PREFLIGHT CHECK. A 2 HOUR DELAY DUE TO LOCATION AND MOUNTING PROCEDURE UNIT IS NOT REPAIRABLE, COST OF NEW, $1,401.00. SUB

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N503T

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N503T before.

- [Cancelled 2013-08-27](https://openairdocs.org/deregistered/N503T-2013-08-27): Snyder Charles W TITAN TORNADO I, S/N T95447COHK0187. Sale reported, canceled. Owner: [Louisville, GA](https://openairdocs.org/faa-place/GA/Louisville)
- [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N503T-undated): British BAC 1-11 212/AR, S/N BAC183. Triennial form not returned

## Related

- Other Flight Design CTLS aircraft: https://openairdocs.org/model/flight-design-ctls/aircraft.md
- The Rotax 912 IS series engine: https://openairdocs.org/engine/rotax-912-is-series.md

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