TM 1-1670-260-12&P
0014 00
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DAMAGED OH-58A/C
MAIN ROTOR, MAIN TRANSMISSION, MAIN TRANSMISSION MOUNT DAMAGE
ONE-HOOK LONG-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 ............................................................................................................................... 7
Rig Recovery Helicopter........................................................................................................................................... 11
Hook-Up and Recovery Flight Operations................................................................................................................ 12
Post Recovery Kit Procedures ................................................................................................................................. 13
Post Recovery Damaged Helicopter Procedures..................................................................................................... 14
Figures
Figure 1. Damaged OH-58A/C and Recovery Helicopter Rigging ............................................................................. 4
Figure 2. OH-58A/C Mast Wedge Assembly.............................................................................................................. 6
Figure 4. Rigging Shackle Assembly.......................................................................................................................... 9
Figure 5. Typical Cargo Hook Thimble Installation (Shown in Double-Eye Configuration) ...................................... 11
Tables
Table 1. Recovery Helicopter Flight Parameters........................................................................................................ 2
Table 2. UMARK Components Required ................................................................................................................... 3
Table 3. Damaged OH-58A/C 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 OH-58A/C with a damaged main rotor, main
transmission, and/or main transmission mount using a one-hook long-line recovery procedure, the rigging of a CH-
47 or UH-60 recovery helicopter, the recovery flight, and post recovery procedures. The long-line one-hook
procedure provides for 90 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.
0014 00-1
