Notice2026-06083
Notice of Intent To Designate as Abandoned Air Mods NW Supplemental Type Certificates
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
March 30, 2026
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
This notice announces the FAA's intent to designate Air Mods NW Supplemental Type Certificate (STC) Nos. SA991NW, SA1009NW, SA1012NW, SA2129NM, SA3326NM, SA3344NM, SA3841NM, SA4135NNM, SA4136NM, SA4387NM, SA4708NM, and SA4722NM as abandoned and make the related engineering data available upon request. The FAA has received a request to provide engineering data concerning these STCs. The FAA has been unsuccessful in contacting Air Mods NW concerning these STCs. This action is intended to enhance aviation safety.
Full Text
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<title>Federal Register, Volume 91 Issue 60 (Monday, March 30, 2026)</title>
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[Federal Register Volume 91, Number 60 (Monday, March 30, 2026)]
[Notices]
[Pages 15684-15685]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-06083]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
[Docket No. FAA-2026-2719]
Notice of Intent To Designate as Abandoned Air Mods NW
Supplemental Type Certificates
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of intent to designate supplemental type certificate as
abandoned; request for comments.
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SUMMARY: This notice announces the FAA's intent to designate Air Mods
NW Supplemental Type Certificate (STC) Nos. SA991NW, SA1009NW,
SA1012NW, SA2129NM, SA3326NM, SA3344NM, SA3841NM, SA4135NNM, SA4136NM,
SA4387NM, SA4708NM, and SA4722NM as abandoned and make the related
engineering data available upon request. The FAA has received a request
to provide engineering data concerning these STCs. The FAA has been
unsuccessful in contacting Air Mods NW concerning these STCs. This
action is intended to enhance aviation safety.
DATES: The FAA must receive all comments by September 28, 2026.
ADDRESSES: You may send comments on this notice by any of the following
methods:
<bullet> Federal eRulemaking Portal: Go to <a href="http://regulations.gov">regulations.gov</a>. Follow
the instructions for submitting comments.
<bullet> Mail: Ed Mills, AIR-771, Federal Aviation Administration,
West Certification Branch, 2200 South 216th St., Des Moines, WA, 98189.
<bullet> Email: <a href="/cdn-cgi/l/email-protection#f5b091dbc994d59d879093c8" mailto:Mills@faa.gov"><span class="__cf_email__" data-cfemail="b1fcd8ddddc2f1d7d0d09fd6dec7">[email protected]</span></a>">Ed.<a href="/cdn-cgi/l/email-protection#2f624643435c6f494e4e01484059"><span class="__cf_email__" data-cfemail="0f426663637c4f696e6e21686079">[email protected]</span></a></a>. Include ``Docket No. FAA-2026-
2719'' in the subject line of the message.
<bullet> Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
FOR FURTHER INFORMATION CONTACT: Ed Mills, Program Manager, AIR-771,
FAA, West Certification Branch; 2200 South 216th St., Des Moines, WA
98189; telephone: 206-231-3515; email: Ed <a href="/cdn-cgi/l/email-protection#307d595c5c43705651511e575f46"><span class="__cf_email__" data-cfemail="e2af8b8e8e91a2848383cc858d94">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites interested parties to provide comments, written
data, views, or arguments relating to this notice. Send your comments
using a method listed under the ADDRESSES section. Include ``Docket No.
FAA-2026-2719'' at the beginning of your comments. The FAA will
consider all comments received on or before the closing date. All
comments received will be available in the docket for examination by
interested persons.
Background
The FAA is posting this notice to inform the public that the FAA
intends to designate Air Mods NW STC Nos. SA991NW, SA1009NW, SA1012NW,
SA2129NM, SA3326NM, SA3344NM, SA3841NM, SA4135NNM, SA4136NM, SA4387NM,
SA4708NM, and SA4722NM, as abandoned and subsequently release the
related engineering data. Air Mods NW STC No. SA991NW is for the
installation of model AA-5A engine mount, cowling, and carburetor air
box in accordance with Kennis G Blackman instructions number KB1010.
STC No. SA1009NW is for the installation of a dorsal fin having part
number (P/N) 5302040-1 and associated assemblies in accordance with
Kennis G Blackman Installation Instructions No. KB 1040. STC No.
SA1012NW is for the installation of auxiliary fuel tank models 2 TAFTA
and 4 TAFTA and increased gross weight in accordance with Weston M.
Howard and A1-E. Smith Installation Instructions No. HS101. STC No.
SA2129NM is for the installation of a Lycoming 0-302-E2G, AA-5A engine
mount, cowling, air induction and a McCauley 1C172/SBTM/7359 propeller
in accordance with, per Ameromod
[[Page 15685]]
Corporation photographs 1 through 3. STC No. SA3326NM is for the
installation of Sensenich Corp. Propeller, model 76EM8S10-0 series
propeller (60'' to 63'' pitch, inclusive) and Gulfstream Aerospace
Corp. spinner assembly, Kit Part Number SK143-2 (Complete Service Kit
or components equal to this assembly) in accordance with Air Mods NW
Installation Instructions No. KD110. STC No. SA3344NM is for the
Relocation of oil cooler in accordance with Kennis G. Blackman photos 1
through 6, dated March 27, 1986. STC No. SA3841NM is for the
installation of Lycoming 0-360-F1A6 engine and McCauley B2D34C
propeller in accordance with Air Mods NW photos 1 through 16, dated May
1, 1987, and sketches 1 and 2, dated May 1, 1987. STC No. SA4135NNM is
for the installation of a Lycoming 0-235-L2C/L2A(M) engine (modified
per STC SE792NW) and Sensenich 72CK-0-52/57 propeller, in accordance
with Air Mods NW Installation Instructions KD238, dated September 16,
1987. STC No. SA4136NM is for the installation of one of the optional
oil coolers: Stewart Warner 10578B, Stewart Warner 10568A (C), Stewart
Warner 8406R, Harrison 8526250, in accordance with Air Mods NW
Installation Instructions KD138, dated September 13, 1987. STC No.
SA4387NM is for the Installation of a Lycoming 0-320-A, C or E series
engine and Sensenich 74DM6-0-58/64 or 74DM7-0-58/64 propeller, in
accordance with drawing list no, KD-320-DL, dated January 20, 1989, or
later FAA approved revision, together with a 5% increase in takeoff
gross weight for each model aircraft. STC No. SA4708NM is for the
installation of bolts to strengthen the nose gear torque tube assembly
in accordance with Air Mods NW drawings No. KDF325MD-1 and KD325MD-2,
or later FAA approved revision. STC No. SA4722NM is for the
installation of a hat shelf in the aft baggage compartment in
accordance with Air Mods NW drawing list No. KD330-DL-1, or later FAA
approved revision.
The FAA has received a third-party request for the release of the
aforementioned engineering data under the provisions of the Freedom of
Information Act (FOIA), 5 U.S.C. 552. The FAA cannot release commercial
or financial information under FOIA without the permission of the data
owner. However, in accordance with title 49 of the United States Code
Sec. 44704(a)(5), the FAA can provide STC ``engineering data'' it
possesses for STC maintenance or improvement, upon request, if the
following conditions are met:
1. The FAA determines the STC has been inactive for 3 years or
more;
2. Using due diligence, the FAA is unable to locate the owner of
record or the owner of record's heir; and
3. The availability of such data will enhance aviation safety.
There has been no activity on these STCs for more than 3 years.
On July 30, 2025, the FAA sent a certified letter to Air Mods NW,
to the attention of Mr. Grant Blackman at his last known address: Air
Mods NW, 1424 Ridge Ave., Snohomish, WA 998290. The letter was
returned, unclaimed, and unable to be forwarded. The letter informed
Mr. Grant Blackman that the FAA had received a request for engineering
data related to STC No. SA3841NM and was conducting a due diligence
search to determine whether this STC and 11 others were inactive and
may be considered abandoned. The letter further requested that Mr.
Grant Blackman respond in writing within 60 days and state whether he
is the holder of this STC and 11 others. The FAA also attempted to make
contact with Mr. Grant Blackman by other means, including telephone
communication, without success.
Information Requested
If you are the owner or heir or a transferee of STC Nos. SA991NW,
SA1009NW, SA1012NW, SA2129NM, SA3326NM, SA3344NM, SA3841NM, SA4135NNM,
SA4136NM, SA4387NM, SA4708NM, or SA4722NM, or have any knowledge
regarding who may now hold any of these STCs, please contact Ed Mills
using a method described in this notice under FOR FURTHER INFORMATION
CONTACT. If you are the heir of the owner, or the owner by transfer, of
any of these STCs, you must provide a notarized copy of your
government-issued identification with a letter and background
establishing your ownership of any of these STCs and, if applicable,
your relationship as the heir to the deceased holder of the STCs.
Conclusion
If the FAA does not receive any response by September 28, 2026, the
FAA will consider Air Mods NW STC Nos. SA991NW, SA1009NW, SA1012NW,
SA2129NM, SA3326NM, SA3344NM, SA3841NM, SA4135NNM, SA4136NM, SA4387NM,
SA4708NM, and SA4722NM as abandoned, and the FAA will proceed with the
release of the requested data. This action is for the purpose of
maintaining the airworthiness of an aircraft and enhancing aviation
safety.
(Authority: 49 U.S.C. 44704(a)(5))
Issued on March 26, 2026.
Steven W. Thompson,
Acting Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2026-06083 Filed 3-27-26; 8:45 am]
BILLING CODE 4910-13-P
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