# N4426W: Waco PBF

- Status: Valid registration
- Airframe: [Waco PBF](https://openairdocs.org/model/waco-pbf) (registry code 9600402, 3 seats)
- Data sheets: [TCDS ATC 491](https://openairdocs.org/tcds/ATC%20491) (The Waco Aircraft Company) (OpenAirDocs)
- Serial number: 3649
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Certificate issued: August 12, 2022
- Expires: August 31, 2029
- Mode S code: A5554A
- Registered owner: [Hirtle Alan L](https://openairdocs.org/faa-owner/HIRTLE%20ALAN%20L)
- Location: [Oro Valley, AZ](https://openairdocs.org/faa-place/AZ/Oro%20Valley)
- Owner type: Individual
- Owner's area on the map: 32.4684° N, 110.9815° W: Placed by OpenAirDocs at the center of ZIP code 85755, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4426W
- Page: https://openairdocs.org/aircraft/N4426W

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 (Waco PBF)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4426W.

## FAA accident and incident reports

None matched to N4426W.

## 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.

## STCs that may be installed (OpenAirDocs) (8)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Waco PBF)

- [STC SA01406NY](https://openairdocs.org/stc/SA01406NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and rotary wing. Airwolf Filter Corporation
- [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc
- [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches. Aero Manufacturing Inc
- [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International
- [STC SA2350NM PAGE 2](https://openairdocs.org/stc/SA2350NM%20PAGE%202): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International
- [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International
- [STC SA2190NM PAGE 2](https://openairdocs.org/stc/SA2190NM%20PAGE%202): Installation of electronics International Digital Volt/Amp Gauges and Accessories. Electronics International
- [STC SA2350NM](https://openairdocs.org/stc/SA2350NM) (historical): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories. Electronics International

## Related

- Other Waco PBF aircraft: https://openairdocs.org/model/waco-pbf/aircraft.md

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