TM 1-1670-260-12&P
0004 00
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DAMAGED AH-1
MAIN ROTOR, MAIN TRANSMISSION, MAIN TRANSMISSION MOUNT DAMAGE
ONE-HOOK SHORT-LINE RECOVERY PROCEDURES
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Index
Introduction................................................................................................................................................................. 1
Pre-Recovery Procedures .......................................................................................................................................... 2
Recovery Flight Parameters and Precautions............................................................................................................ 2
Components Required ............................................................................................................................................... 3
Damaged Helicopter Rigging ..................................................................................................................................... 3
Install Tail-Boom Rigging..................................................................................................................................... 3
Install Forward Main Rigging ............................................................................................................................... 5
Rig Recovery Helicopter........................................................................................................................................... 10
Hook-Up and Recovery Flight Operations................................................................................................................ 11
Post Recovery Kit Procedures ................................................................................................................................. 12
Figures
Figure 1. Damaged AH-1 and Recovery Helicopter Rigging...................................................................................... 4
Figure 2. Blade Sleeve Assembly Rigging and Installation ........................................................................................ 6
Figure 3. AH-1 Mast Wedge Assembly...................................................................................................................... 8
Figure 4. Rigging Shackle Assembly.......................................................................................................................... 9
Figure 5. Typical Cargo Hook Thimble Installation (Shown in Double-Eye Configuration) ...................................... 10
Tables
Table 1. Recovery Helicopter Flight Parameters........................................................................................................ 2
Table 2. UMARK Components Required ................................................................................................................... 3
Table 3. Damaged AH-1 and Recovery Helicopter Rigging - Key to Figure 1 ........................................................... 5
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1. INTRODUCTION
This Work Package (WP) covers the rigging of a non-flyable AH-1 with a damaged main rotor, main transmission,
and/or main transmission mount using a one-hook short-line recovery procedure, the rigging of a CH-47 recovery
helicopter, the recovery flight, and post recovery procedures. The short-line one-hook procedure provides for 60
feet of clearance between the recovery helicopter’s single cargo hook in use and the shackle assembly that the
damaged helicopter is rigged to.
Damaged Main Rotor and/or Transmission non-flyable damaged classification consist of the following:
a. Main rotor head mutilated.
b. Main rotor shaft/mast bent.
c. Main transmission cracked, broken, loose or ripped out of the airframe mounts.
d. Engine severely damaged or ripped out (not through a structural lifting point)
The ground rigging crew with the Unit Maintenance Aerial Recovery Kit (UMARK) can be deployed separately or
with the recovery helicopter. The recovery process includes rigging the damaged helicopter, rigging the recovery
helicopter, hooking up the recovery helicopter to the damaged helicopter, and having the recovery helicopter
transport the damaged helicopter to a designated site.
Refer to Work Package 0001 00 for general information concerning the UMARK function and component details.
0004 00-1
