TB 1-1670-260-12
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3.1.2 Additional emphasis/wording is required in the UMARK TM Work Packages.
The following emphasis/wording is added to preclude damage to the AH-64 during
recovery operations:
3.1.3 The review determined the following concerns that could compromise the
airworthiness of a recovered helicopter returned to flight status based on the analysis
supplied by Boeing.
3.1.3.1 Add "and main rotor support" to main rotor assembly in current paragraph
6a. References affected 1b - 1g.
3.1.3.2 Insert the following Note, "A short line recovery of an AH-64 helicopter
with the blades on in bad weather or high winds could result in main rotor blade
damage." between current paragraph 6c and 7. References affected 1b, 1d, 1e, and
1g.
3.1.3.3 Modify current paragraph 7c(1) to read: "Position the mid-point of the
green/white sling (1) View A, under the 2 o'clock position main rotor blade
retention assembly by threading the green/white sling (1) through the opening
above the Droop Stop Ring and Droop Stop Follower Spring (see views to be
inserted from reference 1i, Figures 5 and 36) ensuring that the sling passes
inboard of the inboard strap pack hub bolts." References affected 1b-1g.
3.1.3.4 Modify current paragraph 7c(2) to read: "Position the mid-point of the
green/white sling (2) View A, under the 4 o'clock position main rotor blade
retention assembly by threading the green/white sling (2) through the opening
above the Droop Stop Ring and Droop Stop Follower Spring (see views to be
inserted from reference 1i, Figures 5 and 36) ensuring that the sling passes
inboard of the inboard strap pack hub bolts." References affected 1b-1g.
3.1.3.5 Modify current paragraph 7c(3) to read: "Position the mid-point of the
green/white sling (3) View A, under the 8 o'clock position main rotor blade
retention assembly by threading the green/white sling (3) through the opening
above the Droop Stop Ring and Droop Stop Follower Spring (see views to be
inserted from reference 1i, Figures 5 and 36) ensuring that the sling passes
inboard of the inboard strap pack hub bolts." References affected 1b-1g.
3.1.3.6 Modify current paragraph 7c(4) to read: "Position the mid-point of the
green/white sling (4) View A, under the 10 o'clock position main rotor blade
retention assembly by threading the green/white sling (4) through the opening
above the Droop Stop Ring and Droop Stop Follower Spring (see views to be
inserted from reference 1i, Figures 5 and 36) ensuring that the sling passes
inboard of the inboard strap pack hub bolts." References affected 1b-1g.
2