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Type Record · As of May 3, 2026

WACO YQC-6

Fixed Wing Single Engine · JACOBS L4 /R755-7

Registered

5

Year Range

1936–1936

NTSB Events

0

Airworthiness Directives

0

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered WACO YQC-6 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

By State (top 10)

  • TX 25.0% 1
  • OH 25.0% 1
  • WA 25.0% 1
  • IL 25.0% 1

By Decade of Manufacture

  • 1930s 100.0% 5

02 /  NTSB Records

Events involving WACO YQC-6 aircraft

No NTSB-recorded events match WACO YQC-6 in the indexed corpus.

03 /  Airworthiness Directives

FAA directives applicable to WACO YQC-6

No matching airworthiness directives are on file for this make and model in the Federal Register.

04 /  Type Certificate Data Sheets

FAA TCDS for WACO YQC-6

The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.

06 /  Supplemental Type Certificates

Modifications approved for WACO YQC-6

16 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

  • 08/21/2024

    STC SA01757WI

    To allow the use of UL91 or UL94 (minimum) grade aviation fuel

    Swift Fuels LLC

    Atlas STC → DRS ↗

  • 07/27/2022

    STC SA01757WI

    To allow the use of UL91 or UL94 (minimum) grade aviation fuel

    Swift Fuels LLC

    Atlas STC → DRS ↗

  • 03/12/2021

    STC SE02712SE

    Installation of the Oil Scavenging Pump System for Jacobs L-4 and R-755

    Henry F. Rogers

    Atlas STC → DRS ↗

  • 07/27/2020

    STC SA01831WI

    To allow the use of UL91 (minimum) grade aviation fuel

    Petersen Aviation Inc

    Atlas STC → DRS ↗

  • 02/11/2019

    STC SA01831WI

    To allow the use of UL91 (minimum) grade aviation fuel

    ADI LLC

    Atlas STC → DRS ↗

  • 12/20/2017

    STC SA01406NY

    Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and\nrotary wing

    Airwolf Filter Corporation

    Atlas STC → DRS ↗

  • 01/24/2017

    STC SA01831WI

    To allow the use of UL91 (minimum) grade aviation fuel

    Petersen Aviation Inc

    Atlas STC → DRS ↗

  • 05/20/2016

    STC SA01757WI

    To allow the use of UL91 or UL94 (minimum) grade aviation fuel

    Swift Fuels LLC

    Atlas STC → DRS ↗

  • 03/09/2016

    STC SA01757WI

    To allow the use of UL91 or UL94 (minimum) grade aviation fuel

    Petersen Aviation Inc

    Atlas STC → DRS ↗

  • 10/28/2015

    STC SA01757WI

    To allow the use of UL91 (minimum) grade aviation fuel

    Petersen Aviation Inc

    Atlas STC → DRS ↗

  • 10/31/2012

    STC SA01406NY

    Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and\nrotary wing

    Airwolf Filter Corporation

    Atlas STC → DRS ↗

  • 07/24/2008

    STC SA02033AT (PAGE 5)

    Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line (47J series w stc's SH4-235SW, SH4-826SW or SH479SW)

    M-20 Oil Separators LLC

    Atlas STC → DRS ↗

  • 03/29/2006

    STC SA02268CH (PAGE 5)

    Installation of Airwolf Filter Corp. Air Oil Separator

    Airwolf Filter Corporation

    Atlas STC → DRS ↗

  • 01/24/2005

    STC SA2693NM

    Installation of Electronics International digital volt/amp gauges and accessories.

    Electronics International Inc.

    Atlas STC → DRS ↗

  • 02/24/1992

    STC SA2687NM

    Installation of Truboplus/ Electronics Int'l gauges and switches.

    ACD Corporation

    Atlas STC → DRS ↗

  • 01/26/1988

    STC SA2693NM

    Installation of Electronics International digital volt/amp gauges and accessories.

    Electronics International

    Atlas STC → DRS ↗

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for WACO YQC-6

05 /  Aircraft of this type

All 5 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.

5 of 5
N-number St Year NTSB FAA
N15705 TX 1936 · Look up ↗
N15722 OH 1936 · Look up ↗
N16205 WA 1936 · Look up ↗
N16212 — 1936 · Look up ↗
N16229 IL 1936 · Look up ↗

Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)

05 /  Sources & Methodology

Every count traces back to a primary US-government source

We render counts and lists as the agency publishes them. Read the methodology →