SAIB: AIR-21-18 Date: November 2, 2021 This document contains information and recommended action. The contents of this document do not...

[Federal Register Volume 86, Number 143 (Thursday, July 29, 2021)] [Rules and Regulations] [Pages 40779-40782] From the Federal Register...

[Federal Register Volume 86, Number 140 (Monday, July 26, 2021)] [Rules and Regulations] [Pages 39942-39949] From the Federal Register...

July 8, 2021 AD #: 2021-15-52 Emergency Airworthiness Directive (AD) 2021-15-52 is sent to owners and operators of various restricted...

Alert Service Bulletin From Bell that effects UH-1 Fleet

Originally published 6/26/2014 This Letter from 1998 was submitted in relation to other posts on the blog regarding the Upper Left Hand...

Posted by the Federal Aviation Administration on Mar 25, 2021 FAA Site link for this NPRM HERE Action Notice of proposed rulemaking...

Huntsville, Alabama - We are pleased to introduce RMCI, Inc. and their advanced Health and Usage Monitoring Systems, or HUMS. The...

Composite blades PN 205-015-150-101 Rampart Helicopters sent in composite blades for biannual inspection, several cracks in the grip...

LORD CORPORATION HAS RELEASED THEIR T.T. STRAPS FOR SALE OUTSIDE OF BELL HELICOPTER. LORD HAS BEEN MAKING THESE IDENTICAL STRAPS FOR BELL...

There have been many unintended external load releases over the years and here is a simple way to reduce that number. Install this...

FEDERAL REGISTER LINK TO MAKE COMMENTS Action Notice of proposed rulemaking (NPRM). Summary The FAA proposes to adopt a new airworthiness...

In my travels over the years I have found MANY aircraft with the main rotor outer drag brace bolt hardware incorrectly installed. General...

This has been brought up before about a re-torque after main rotor installation. In this case the TM 55-1520-210-23-1 is not a help....

I find this all the time on aircraft, another standard aircraft hardware installation, again not a standard, Huey installation, in the...

Many lower fuel cell floor panels have been damaged in removal see attached photo. These panels should be removed every 3 & 6 phase or at...

Combustor Rumble can be a problem in engines that reverse the combustion gas flow prior toentering the 1st stage gas producer nozzle....

The UH-1 D, E,H, V fuel system is not a simple system. In this article I will explain how it works, identify components and how they...

NOTE FROM UH1OPS While we usually stick to maintenance articles on UH1OPS MAINTENANCE BLOGs, we support this product and after seeing the...

To assist those who were not military and taught how to read the TM Manuals for UH-1 Maintenance. On the text pages that go with the...

SUBJ: Rotorcraft Tail Boom, Attach Structure Failure SAIB: SW-18-29R1 Date: February 19, 2019 This is information only....

On September 16, 2013, about 1535 Pacific daylight time, a Garlick UH-1B, N204UH, experienced a tailboom separation while logging in...

Original Article: Helicopter Maintenance Magazine 2/1/2012 Before I say anything else, I want to point out that there is a lot of...

Halloween Update! Dealing with spookiest part of aging Helicopters, Corrosion! This update focuses on the importance of inspecting the...

ALERT SERVICE BULLETIN UH-1H-18-20 23 October 2018 MODEL AFFECTED: UH-1H SUBJECT: MAIN ROTOR BLADE 204-011-250-113, INTRODUCTION OF...

Do you know the P/N of the UH1 drive shaft removal tool? We have a customer looking for one and our company doesn’t have it. They stated...

This picture clearly shows the importance of using heat, and proper alignment when pressing bearings into critical bores. This damage was...

We received a question this week in regards to time life on TT Straps retirement life. When I looked at our old component sheets, we...

Our main goal when building this platform was to provide resources to the UH-1 industry. We appreciate maintenance questions sent our...

Thought this article is a good item to share. Published in Rotorbreeze 2006 by the now retired David Burch Bell Helicopter Senior...

I was contacted by a mechanic who in the process of removing a main rotor hub assembly after removing the main rotor found that the...

I was contacted by a mechanic that found the following when removing the stabilizer bar prior to removing the main rotor hub and blades...

HAVE YOU CHECKED YOUR COLLECTIVE FRICTION LATELY? I just received a couple of photos of the set screws used to make adjustment of the...

A couple of weeks ago I was asked to give some basic information to the maintenance man the pickup team brought with them. He hadn’t...

Do you have a new mechanic or mechanics that need a refresher course on the UH-1 helicopter? Do you need an IA renewal? Peter Frinchaboy...

Know Your Capabilities and your Limitations Scenario: You are doing a lift job with little margin. The Load calculation indicates the...

In the photo below there are two Igniters, the one on the left shows that the spark is concentrated on one area of the igniter. Hard to...

Hi this is Pete from Metro Fire again. On the NTSB accident website there is an accident involving aircraft UH-1H N260TA 5-23-2014. There...

With the military releasing aircraft to civilian operators, many civilian operators are following the maintenance schedule the military...

I have heard of at least four aircraft in the last six months having hard landings some severe, luckily with no fatalities. In each event...

In 1992 UH-1-92 ASAM-13 was issued that later became TB1-1520-210-19 one time & recurring inspection of the droop compensator jackshaft....

The military main rotor was modified with a plate bolted to the bottom of the main rotor yoke and a support bolted to the mast just above...

One of our operators shared the following information after one of their pilots had a linear actuator failure while fighting fires in...

Over the years I have seen this many times. The fuel lines that go up the back wall of the hell hole from the boost pumps to the main...

The Tail Rotor Pitch Change has the short manual inspection criteria for the pitch change housing ( Quill ) 204-010-775-3 and the Pitch...

The purpose of the synchronized elevators is to increase the fore/aft cg range by lowering the tail as the aircraft accelerated. They did...

"Tail Rotor pitch change if you still have the 204 style gearbox. In the enclosed photo the pitch change rod on the right is excessively...

This a photo of a T1 sensing unit removed from a Fuel Control. These should NEVER be removed from a Fuel Control they are calibrated...

A Quick Guide to Troubleshooting Hydraulic System Internal Leaks Here in my town, there is an automobile radiator repair shop with a...

If you are operating the Centrisep Inlet Particle Separator on your aircraft and having to do engine washes often, check the drain valve...