# N1937S: Waco ZVN-8

- Status: Valid registration
- Airframe: [Waco ZVN-8](https://openairdocs.org/model/waco-zvn-8) (registry code 9601404, 5 seats)
- Data sheets: [TCDS TC 677](https://openairdocs.org/tcds/TC%20677) (The Waco Aircraft Company) (OpenAirDocs)
- Serial number: 5107
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Certificate issued: October 23, 2014
- Expires: October 31, 2027
- Mode S code: A176AE
- Registered owner: [Howard Aviation LLC](https://openairdocs.org/faa-owner/HOWARD%20AVIATION%20LLC)
- Location: [Marblehead, OH](https://openairdocs.org/faa-place/OH/Marblehead)
- Owner type: LLC
- Owner's area on the map: 41.5151° N, 82.7711° W: Placed by OpenAirDocs at the center of ZIP code 43440, 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=1937S
- Page: https://openairdocs.org/aircraft/N1937S

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 ZVN-8)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N1937S.

## FAA accident and incident reports

None matched to N1937S.

## 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) (7)

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 ZVN-8)

- [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC
- [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC
- [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc
- [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 SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. M-20 Oil Separators LLC
- [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International
- [STC SA3862NM PAGE 2](https://openairdocs.org/stc/SA3862NM%20PAGE%202): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories. Electronics International

## Related

- Other Waco ZVN-8 aircraft: https://openairdocs.org/model/waco-zvn-8/aircraft.md

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