# N19636: 1993 English John Day CHALLENGER II

- Status: Valid registration
- Airframe: [English John Day CHALLENGER II](https://openairdocs.org/model/english-john-day-challenger-ii) (registry code 05901AK, 2 seats)
- Engine: [Rotax 503DCSI](https://openairdocs.org/engine/rotax-503dcsi) (registry code 55567)
- Serial number: CH20893CW1011
- Year built: 1993
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Light sport, airplane
- Airworthiness date: January 7, 2010
- Certificate issued: March 10, 2006
- Expires: October 31, 2029
- Mode S code: A18155
- Registered owner: [English John Day](https://openairdocs.org/faa-owner/ENGLISH%20JOHN%20DAY)
- Location: [Richmond, CA](https://openairdocs.org/faa-place/CA/Richmond)
- Owner type: Individual
- Owner's area on the map: 37.9808° N, 122.3376° W: Placed by OpenAirDocs at the center of ZIP code 94806, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=19636
- Page: https://openairdocs.org/aircraft/N19636

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.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (English John Day CHALLENGER II)

None in force.

### Matched by engine (Rotax 503DCSI)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N19636.

## FAA accident and incident reports

None matched to N19636.

## 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 N19636 not matched to an aircraft (3)

They name N19636, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR CALA0200083](https://openairdocs.org/sdr/CALA0200083), Feb 20, 2002: ANGLE. CORRODED. INSPECTION FOUND Z-ANGLE IN L-I DOOR AREA CORRODED AT STA 294-360. THE Z-ANGLE WAS REPLACED IAW SRM 51-10-02.
- [SDR CALA0200082](https://openairdocs.org/sdr/CALA0200082), Feb 18, 2002: ATTACH FITTING. CORRODED. INSPECTION FOUND LT HORIZONTAL STABILIZER UPPER FORWARD ATTACH FITTING ON CENTER BOX LUG FACE CORRODED AROUND BUSHING FORWARD LUG FACE. THE BUSHING WAS REMOVED 
- [SDR CALA0200072](https://openairdocs.org/sdr/CALA0200072), Feb 14, 2002: ANGLE. CORRODED. INSPECTION FOUND SUPPORT ANGLE CORRODED AT STA 294-312, LOCATED INLINE WITH RIGHT SIDE OF COCKPIT DOORWAY, RBL 12. THE SUPPORT ANGLE WAS REMOVED AND A NEW ANGLE

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N19636

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N19636 before.

- [Cancelled 1973-05-29](https://openairdocs.org/deregistered/N19636-1973-05-29): Cessna 172L, S/N 172-60627. Owner: [University Of Detroit Flying Club](https://openairdocs.org/faa-owner/UNIVERSITY%20OF%20DETROIT%20FLYING%20CLUB), [Detroit, MI](https://openairdocs.org/faa-place/MI/Detroit)

## Related

- Other English John Day CHALLENGER II aircraft: https://openairdocs.org/model/english-john-day-challenger-ii/aircraft.md
- The Rotax 503DCSI engine: https://openairdocs.org/engine/rotax-503dcsi.md

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