# N16204: 1936 Waco ZQC-6 - Status: Valid registration - Airframe: [Waco ZQC-6](https://openairdocs.org/model/waco-zqc-6) (registry code 9600648, 5 seats) - Engine: [Jacobs L5](https://openairdocs.org/engine/jacobs-l5) (registry code 35004) - Data sheets: [TCDS TC 598](https://openairdocs.org/tcds/TC%20598) (The Waco Aircraft Company), [TCDS TC 156](https://openairdocs.org/tcds/TC%20156) (Air Repair Inc.) (OpenAirDocs) - Serial number: 4404 - Year built: 1936 - Type: Fixed wing single engine - Engine type: Reciprocating - Airworthiness: Standard, normal - Airworthiness date: March 17, 1948 - Certificate issued: July 10, 2007 - Expires: December 31, 2027 - Mode S code: A0FB91 - Registered owners: [Sherwood Timothy H](https://openairdocs.org/faa-owner/SHERWOOD%20TIMOTHY%20H), [Sherwood Mitzi D](https://openairdocs.org/faa-owner/SHERWOOD%20MITZI%20D) - Location: [Niles, MI](https://openairdocs.org/faa-place/MI/Niles) - Owner type: Co-owned - Owner's area on the map: 41.8319° N, 86.2308° W: Placed by OpenAirDocs at the center of ZIP code 49120, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=16204 - Page: https://openairdocs.org/aircraft/N16204 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 ZQC-6) None in force. ### Matched by engine (Jacobs L5) None in force. ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N16204. ## FAA accident and incident reports None matched to N16204. ## 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 N16204 not matched to an aircraft (6) They name N16204, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR 2023FA0000206](https://openairdocs.org/sdr/2023FA0000206), Jul 24, 2019: REDUCER. FAILED. ON 24 JUL 2019, A TH-57C HELICOPTER EXPERIENCED OIL PRESSURE FLUCTUATIONS IN FLIGHT THAT WARRANTED THE DECISION TO LAND THE AIRCRAFT AS SOON AS POSSIBLE. ONCE O - [SDR 2017FA0000126](https://openairdocs.org/sdr/2017FA0000126), Jul 17, 2015: LONGERON. CRACKED. THE RT UPPER AFT LONGERON WAS FOUND CRACKED . THE LONGERON WAS REPLACED. - [SDR 2017FA0000125](https://openairdocs.org/sdr/2017FA0000125), May 1, 2015: LONGERON. CRACKED. THE LT UPPER AFT LONGERON WAS FOUND CRACKED. THE CRACK EXTENDED DOWNWARD FROM THE UPPER FLANGE’S FREE EDGE AT BS 130. THE LONGERON WAS REPLACED. - [SDR 2017FA0000133](https://openairdocs.org/sdr/2017FA0000133), Apr 15, 2015: FRAME. CRACKED. THE LT BS 130 FRAME WAS FOUND CRACKED DURING A PHASE VISUAL INSPECTION. THE CRACK EXTENDED OUTBOARD 2.0 INCH FROM THE INBOARD FLANGE FREE EDGE AT LBL 67. THE FR - [SDR 2017FA0000136](https://openairdocs.org/sdr/2017FA0000136), Feb 5, 2015: FRAME. CRACKED. THE RT BS 117 FRAME WAS FOUND CRACKED DURING A PHASE VISUAL INSPECTION. THE CRACK EXTENDED OUTBOARD 3.0 INCH FROM THE INBOARD FLANGE FREE EDGE AT RBL 67. THE FR - [SDR 2017FA0000135](https://openairdocs.org/sdr/2017FA0000135), Feb 5, 2015: FRAME. CRACKED. THE RT BS 117 FRAME WAS FOUND CRACKED DURING A PHASE VISUAL INSPECTION. THE CRACK EXTENDED OUTBOARD 1.5 INCH FROM THE INBOARD FLANGE FREE EDGE AT RBL 67. THE FR ## STCs that may be installed (OpenAirDocs) (6) 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 ZQC-6) - [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 ### Approved for the engine (Jacobs L5) - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC ## Related - Other Waco ZQC-6 aircraft: https://openairdocs.org/model/waco-zqc-6/aircraft.md - The Jacobs L5 engine: https://openairdocs.org/engine/jacobs-l5.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.