Exceeding the flight parameters may severely damage
the main rotor assembly of the disabled helicopter,
requiring component replacement. Report the amount
and duration of any flight parameter exceeded to the
unit responsible for the disabled helicopter.
The height above ground level may be difficult to
determine during low-level UMARK operations due to the
length of the sling system. Flight crews should exercise
extreme caution during recovery operations to ensure the
disabled helicopter remains clear of ground obstacles.
4. COMPONENTS REQUIRED
Components of UMARK utilized during the one-hook, long-line recovery are listed in Table 2. Common equipment
used by the ground rigging crew, such as shockproof gloves, goggles, radios, etc., are not included in UMARK.
No additional tools are required for UMARK assembly or rigging of the helicopters.
Table 2. UMARK Components Required
Black/White 30 Ft Heavy Weight Sling
Black/White 30 Ft Heavy Weight Sling with Bridle
OH-58A/C Mast Wedge Assembly
Yellow/White 153 Inches (12.75 Ft) Light Weight
Adjustable Length Tie-Down
Red/White 208 Inches (17.33 Ft) Light Weight Sling
Fixed Length Tie-Down (With Snap)
Blue/White 360 Inches (30.0 Ft) Light Weight Sling
Fixed Length Tie-Down (Without Snap)
Black/White 120 Inches (10 Ft) Light Weight Sling
Blade Sleeve Assemblies
Lifting Clevis Assembly
Blade Pole Assembly
Sling Link Assembly
Cargo Hook Thimble
Box Link Assembly
5. DISABLED HELICOPTER RIGGING
6. Inspect Disabled Helicopter for Damage
To prevent death or injury to personnel, and/or
damage to the recovery and/or recovered helicopter,
discontinue the disabled recovery procedure if
damage is detected and refer to applicable Work
Package of this manual as directed.
a. Check the main rotor assembly, transmission and transmission mounts, and tail-boom for damage in
accordance with applicable technical manual.
(1) For damaged main rotor, main transmission, and/or transmission mounts perform damaged recovery
procedure outlined in Work Package 0014 00 of this manual.
(2) For damaged tail-boom perform damaged recovery procedure outlined in Work Package 0015 00 of
b. If no damage is detected in the preceding step proceed to the next step.