FAA-listed STC holder

Everts Air Cargo STCs

The Jun 30, 2026 FAA DRS snapshot lists 4 selected supplemental type certificates with status Current under Everts Air Cargo. The records span 6 public aircraft directories and 3 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

Dec 16, 2021

latest recorded revision

Modification mix

Other aircraft modifications2 Fuel systems1 Cabin and interiors1

Aircraft represented

Boeing DC-9-33F59 STCs Boeing DC-6B11 STCs Boeing DC-6A8 STCs McDonnell Douglas DC-6B (Navy R6D-1Z)7 STCs McDonnell Douglas DC-6A (USAF C-118A)4 STCs McDonnell Douglas DC-6A (Navy R6D-1)3 STCs

Recently revised records

Showing the 4 most recently revised records. Category directories provide the complete paginated discovery path.

4 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

Everts Air Cargo supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
ST02555AK Installation of three 1800 gallon Boeing bulk liquid tanks. Other aircraft modifications View record	Boeing DC-9-33FTC A6WE	Current at cited snapshot Revised Dec 16, 2021 Application: Jan 27, 2012	FAA holder: Everts Air Cargo FAA authority record
SA1170NW Modify type design by installing bulk liquid cargo tank assembly. Fuel systems View record	McDonnell Douglas DC-6B (Navy R6D-1Z)TC 6A4	Current at cited snapshot Revised Mar 18, 2016 Application: Not listed	FAA holder: Everts Air Cargo FAA authority record
ST02275AK Approval for Douglas DC-6A and DC-6B aircraft operations on runways with slopes in excess of 2% gradient up to 6% gradient. Other aircraft modifications View record	Boeing DC-6ATC 6A3 Boeing DC-6BTC 6A4	Current at cited snapshot Revised Jan 27, 2011 Application: Jul 21, 2006	FAA holder: Everts Air Cargo FAA authority record
ST981SO Deactivation of the cabin pressurization system, conversion of the cargo compartment to a class 'E' compartment, and modification of the ventilation system. Cabin and interiors View record	McDonnell Douglas DC-6A (USAF C-118A)TC 6A3 McDonnell Douglas DC-6A (Navy R6D-1)TC 6A3 McDonnell Douglas DC-6B (Navy R6D-1Z)TC 6A4	Current at cited snapshot Revised Jun 14, 2010 Application: Mar 6, 1978	FAA holder: Everts Air Cargo FAA authority record

Modification mix

Aircraft represented

Recently revised records

Installation of three 1800 gallon Boeing bulk liquid tanks.

Modify type design by installing bulk liquid cargo tank assembly.

Approval for Douglas DC-6A and DC-6B aircraft operations on runways with slopes in excess of 2% gradient up to 6% gradient.

Deactivation of the cabin pressurization system, conversion of the cargo compartment to a class 'E' compartment, and modification of the ventilation system.