OAS & Interagency Aviation "Tech Bulletins"

All documents listed on this page are in PDF format.

FY 2022

Interagency Aviation Tech Bulletin 22-02 Interagency Fire Helicopter Mechanic Approval

Interagency Aviation Tech Bulletin 22-01 Malfunctioning Matrice 600 Propellers

FY 2020

Interagency Tech Bulletin 2020-01 Aerostat Mark V Plastic Sphere Dispenser and PSDS Plastic Spheres​
Tech Bulletin 2020-02 Contract and Fleet Pilot Competency Checks and Airman Medical Certificates​ (Supersedes Tech Bulletin 2020-01)
Interagency Tech Bulletin 2020-01 Aerostat Mark V Plastic Sphere Dispenser and PSDS Plastic Spheres​
Tech Bulletin 2020-01 Contract and Fleet Pilot Competency Checks and Airman Medical Certificates (Superseded by Tech Bulletin 2020-02)

FY 2019

​Interagency Tech Bulletin 2019-02 USFS & DOI Aircraft Procurement, Release vs Reassigned​
Interagency Tech Bulletin 2019-01: Aero Commander 690 Vertical Fin Attachment Bulkhead Cracks​
Interagency Tech Bulletin 2019-01: Portable Electronic Devices Onboard Aircraft​ (Rescinded 11/30/2018)​

FY 2018

Interagency Tech Bulletin 2018-03: Aerospace Filtration System (AFS) Engine Air Filter System – Possible Seal Failure​
Tech Bulletin 2018-02: Aviation Transport of Hazardous Materials​
Interagency Tech Bulletin 2018-02: USFS & DOI Aircraft Procurement, Release vs Reassigned
Tech Bulletin 2018-01: Aviation Transport of Hazardous Materials]
Interagency Tech Bulletin 2018-01: NAS1211B20 Ring and Stud Failure, Rappel Spotter Tether Attachment System

FY 2017

​Interagency Tech Bulletin 2017-02: Aviation Transport of Hazardous Materials​
​Interagency Tech Bulletin 2017-01: Clarification of the HOGE Power Check requirement

FY 2016

​Interagency Tech Bulletin 2016-03: Harness for doors-off operations from helicopters for Rappel, Plastic Sphere Dispenser (PSD), Aerial Capture, Eradication and Tagging of Animals (ACETA), etc
​Interagency Tech Bulletin 2016-02: Bell 212HP and Bell 205 A-1++ Load Calculations (OAS-67/FS 5700-17)
Interagency Tech Bulletin 2016-01: Garmin VHF-AM Radio Update (Updated 02/18/16)

FY 2015

Interagency Tech Bulletin 2015-02: Basic Weather Information on Manifests and Use of Belt Weather Kits
Interagency Tech Bulletin 2015-01: USFS & DOI Aircraft Procurement, Release vs Reassigned
Tech Bulletin 2015-02: Renewed Hazmat Special Permit: DOT-SP-9198 (Sixteenth Revision) Superseded by:
DOT-SP-9198 (Seventeenth Revision)
(Special Permit Authorization DOT-SP 9198 - Expiration Date: February 28, 2026)
Tech Bulletin 2015-01: Special Emphasis Item (SEI) - Aircraft Weight and Balance

FY 2014

Interagency Tech Bulletin 2014-03: Onboard Systems Bell 206L/407 Manual Release Cable
Tech Bulletin 2014-02: Introduction to SEI's and OPM-22 Compliance
Tech Bulletin 2014-01: Top Cub Cold Weather Operations
Interagency Tech Bulletin 2014-02: Interim Change to Interagency Aerial Ignition Guide
Interagency Tech Bulletin 2014-01: Airtanker Base Frequencies-There is no "National Standard 123.975"

FY 2013

Interagency Tech Bulletin 2013-02: Major Changes to Automated Flight Following
Interagency Tech Bulletin 2013-01: Foam Weight Accountability on Interagency Load Calculations

FY 2012

Interagency Tech Bulletin 2012-04: Interagency Helicopter Pilot Card
Interagency Tech Bulletin 2012-03: Heliwell Mobile Dip Tanks
Interagency Tech Bulletin 2012-01: Renewed Hazmat Special Permit: DOT-SP-9198 (Sixteenth Revision) (Superseded by TB 2015-02)

FY 2011

Interagency Tech Bulletin 2011-03: Clarification of utilizing the Weight Altitude Temperature (WAT) limit Chart
Interagency Tech Bulletin 2011-02: Hazmat Special Permit: DOT-SP-9198 (Superseded by IATB 2012-01)
Interagency Tech Bulletin 2011-01: 2011 Frequency Update

FY 2010

Tech Bulletin 2010-01: AMS Mission Codes
Interagency Tech Bulletin 2010-03: TDFM-136 Radio Problems
Interagency Tech Bulletin 2010-02: Interagency Guidance on Toning of the National Flight Following Frequency
Interagency Tech Bulletin 2010-01: Air Tanker Base Radio Frequencies

FY 2009

Interagency Tech Bulletin 09-01: Clarification of Helicopter Load Calculation Method
Tech Bulletin 09-01: Pilot Certificates

FY 2008

Interagency Tech Bulletin 08-03: Aircraft Fuel Sampling
Interagency Tech Bulletin 08-02: National Flight Following Frequency
Interagency Tech Bulletin 08-01: P25 Radio Implementation

FY 2007

Interagency Tech Bulletin 07-01: Checklist Discipline

FY 2006

Tech Bulletin 06-03: Aviation Personnel and Contractors Operating AS 350B3 Helicopters
Tech Bulletin 06-02: OAS Approved Inspectors, DOI Pilots, Maintenance Contract Facilities
Tech Bulletin 06-01: Performance Data for Multi-Engine Airplanes

FY 2005

Tech Bulletin 05-02: Dromader Fuel Compensation Needle
Tech Bulletin 05-01: Induction Air Filters

FY 2004

Tech Bulletin 04-03: Cargo Hook Releases and Cable Adjustment
Tech Bulletin 04-02: Static Line and Anchor Installation
Tech Bulletin 04-01: Cargo Hook Inspection

FY 2003

Tech Bulletin 03-04: SEAT Emergency Drop Systems
Tech Bulletin 03-03: Velcon Service Bulletins: V. 1, No 2; V. 2, No.3

FY 2000

Tech Bulletin 00-03: Bell 206L1-C-30P