Aviation Technical Bulletins
Forest Service (FSTB) and Interagency (IATB)
Interagency Aviation Technical Bulletins are blue bordered and published on an as needed basis. They are utilized to disseminate information to raise awareness of technical issues related to aircraft systems, equipment or operations.
2024
24-01 UH-60/S-70 Operational Engine Health Indicator Test / Anti-Ice Bleed and Start Valve Check (PDF) (489 KB)
2019
19-01 Portable Electronic Devices Onboard Aircraft, (PDF) (372 KB)
2018
18-01 Fixed-Wing Return to Contract Availability Process, (PDF) (358 KB)
2016
16-02 Fixed-Wing Return To Contract Availability Process, (PDF) (107 KB)
16-01 Garmin VHF-AM Radio Mod Level 6 Revision of IATB 16-01, (PDF) (83 KB)
26-03, Modification in Weight Reductions for Helicopter Make and Models, (PDF, 268 KB)
26-02, Suspected Unapproved Parts, (PDF, 413 KB)
26-01, Helicopter Cargo Hook Operational Checks, (PDF, 362 KB)
25-02, Contaminants found in LC E20 bulk deliveries, (PDF, 757 KB)
25-01 Attitude and Heading Errors After Sustained Turns, (PDF, 284 KB)
24-03 USFS and DOI Aircraft Procurement, Release vs. Reassigned, (PDF) (297 KB)
24-02 Dragon Egg Plastic Sphere Devices for UAS Operations, (PDF) (176 KB)
24-01 Plastic Aerial Ignition Spheres with Energetic Reactions, (PDF) (489 KB)
20-02 Joint Precision Airdrop System – “JPADS”, (PDF) (667 KB)
20-01 Aerostat Mark V Plastic Sphere Dispenser and PSDS Plastic Spheres, (PDF) (225 KB)
19-02 USFS & DOI Aircraft Procurement, Release vs Reassigned, (PDF) (443 KB)
19-01 Aero Commander 690 Vertical Fin Attachment Bulkhead Cracks, (PDF) (803 KB)
18-03 Aerospace Filtration System (AFS) Engine Air Filter System - Possible Seal Failure, (PDF) (755 KB)
18-02 USFS & DOI Aircraft Procurement, Release vs Reassigned, (PDF) (103 KB)
18-01 NAS1211B20 Ring and Stud Failure, Rappel Spotter Tether Attachment System, (PDF) (326 KB)
17-02 Aviation Transport of Hazardous Materials, (PDF) (99 KB)
17-01 Clarification of the HOGE Power Check requirement, (PDF) (119 KB)
16-02 Bell 212HP and Bell 205 A-1++ Load Calculations (OAS-67/FS 5700-17), (PDF) (119 KB)
16-01 Garmin VHF-AM Radio Update, (PDF) (93 KB)
15-03 Plastic Aerial Ignition Spheres Passing Through Closed Chutes, (PDF) (216 KB)
15-02 Basic Weather Information on Manifests and Use of Belt Weather Kits, (PDF) (109 KB)
15-01 USFS & DOI Aircraft Procurement, Release vs Reassigned, (PDF) (414 KB)
14-03 Onboard Systems Bell 206L/407 Manual Release Cable, (PDF) (940 KB)
14-02 Interim Change to Interagency Aerial Ignition Guide, (PDF) (391 KB)
14-01 Airtanker Base Frequencies—There is no “National Standard 123.975”, (PDF) (463 KB)