2. PRE-RECOVERY PROCEDURES
To prevent catastrophic failure do not use the UMARK if
its record log indicates 20 or more aerial recovery uses.
Ensure that a pre-usage inspection is performed on the UMARK contents as outlined in Work Package 0027 00.
Do not use the UMARK kit if the kits usage log indicates 20 or more uses of the kit. Refer to Work Package 0027
00 for disposition instructions if the kit has 20 or more uses. Do not use the kit if any required content items fail
3. RECOVERY FLIGHT PARAMETERS AND PRECAUTIONS
Flight parameters for the applicable recovery helicopter are specified in Table 1.
Table 1. Recovery Helicopter Flight Parameters
40 Knots Indicated Air Speed (KIAS)
Maximum Bank Angle:
500 Feet Per Minute (FPM)
1000 Feet Per Minute (FPM)
Once the damaged helicopter is connected to the
recovery helicopter and lifted to a hover, the pitch
attitude of the damaged helicopter must be checked
to ensure a nose down attitude is achieved.
A damaged helicopter may rotate while in a hover.
This rotation may cause slings of some UMARK
rigging configurations to twist or to tighten at the
main rotor assembly. The rotation will generally
stop as airspeed is increased to approximately 5
to 10 knots. The recovery helicopter flight crew
should minimize hover time.
If oscillations of damaged helicopter develop
during flight, tests have shown that lowering
airspeed, returning to wings level flight, and
initiating a climb has a stabilizing effect.
It is critical for the recovery helicopter flight crew to
report any unusual occurrences. For example, vertical
bounce, severe jerking of the damaged helicopter,
hard landing of the damaged helicopter following
recovery, UMARK component failure, or exceeding the
flight parameters. Report any unusual occurrences to
the unit responsible for the damaged helicopter.