There may not be one:
From ADA572405 (1).pdf "Current procedures for assessment of BDR in Helicopters"
The Army currently has Battle Damage Assessment and Repair manuals for the following classes of helicopters: UH-60, AH-64A/D, CH-47D and OH-58 A/C/D; and, every one of these Battle Damage manuals opens with these two caveats:
• “BDAR fixes shall be used only in combat or for training at the discretion of the commander, in either
case damages shall be repaired by standard procedures as soon as practicable.” The manual talks
about “the Command” however the Level of command is not specified in Manual, based on general
field experiences; it is normally at Brigade with a shift move down possibly to Battalion, with a
Standard Operating Procedure (SOP) for direction.
• Repairs are made using interim techniques, off-the-shelf standard hardware (not necessarily aircraft
related) and without concern for appearance.
No doubt the basic principles from the OH-58 could be read across in some cases:
http://www.liberatedmanuals.com/TM-55-1520-228-BD.pdf