# N991H: 1929 Waco JYM

- Status: Valid registration
- Airframe: [Waco JYM](https://openairdocs.org/model/waco-jym) (registry code 9601504, 3 seats)
- Engine: [Wright 975E&F-2&3](https://openairdocs.org/engine/wright-975e-f-2-3) (registry code 67015)
- Data sheets: [TCDS TC 2-361](https://openairdocs.org/tcds/TC%202-361) (The Waco Aircraft Company) (OpenAirDocs)
- Serial number: D-3
- Year built: 1929
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: October 6, 2003
- Certificate issued: January 11, 2013
- Expires: January 31, 2029
- Mode S code: ADD709
- Registered owner: [Greatest Generation Naval Museum](https://openairdocs.org/faa-owner/GREATEST%20GENERATION%20NAVAL%20MUSEUM)
- Location: [Colorado Springs, CO](https://openairdocs.org/faa-place/CO/Colorado%20Springs)
- Owner type: Corporation
- Owner's area on the map: 38.7971° N, 104.6894° W: Placed by OpenAirDocs at the center of ZIP code 80916, 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=991H
- Page: https://openairdocs.org/aircraft/N991H

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 JYM)

None in force.

### Matched by engine (Wright 975E&F-2&3)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N991H.

## FAA accident and incident reports

None matched to N991H.

## 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 N991H not matched to an aircraft (2)

They name N991H, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR 99ZZZX2215](https://openairdocs.org/sdr/99ZZZX2215), May 18, 1999: ARM. DAMAGED. RUDDER PEDAL ARM PIVOT HOLES FOR PEDAL ELONGATED. FOUND DURING ROUTINE INSPECTION OF INTERIOR (DETAIL). REPLACED RUDDER PEDAL ARM.
- [SDR 99ZZZX2216](https://openairdocs.org/sdr/99ZZZX2216), May 4, 1999: HINGE. CRACKED. PILOT'S CREW DOOR REPORTED DIFFICULT TO CLOSE. INSPECTED DOOR LOCK LATCHES AND LUBBED. NO DISCREPANCIES FOUND. INSPECTED CREW DOOR UPPER HINGES. UPPER FORWARD H

## STCs that may be installed (OpenAirDocs) (10)

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 JYM)

- [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC
- [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric. Aviation Products Systems Inc
- [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc
- [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 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 JYM aircraft: https://openairdocs.org/model/waco-jym/aircraft.md
- The Wright 975E&F-2&3 engine: https://openairdocs.org/engine/wright-975e-f-2-3.md

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