NORMAL
MWO effective date 1 October 1980 and completion date 31 March 1982
MWO 55-1520-241-30-2
DEPARTMENT OF THE ARMY MODIFICATION WORK ORDER
REWIRING OF THE ANTI-COLLISION/
NAVIGATION LIGHT CIRCUIT
(CH-47A, CH-47B AND CH-47C HELICOPTERS)
Headquarters, Department of the Army, Washington, D. C.
12 January 1981
REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS
You can help improve this manual. If you find any mistakes or if you know of a way to
improve the procedures, please let us know. Mail your letter, DA Form 2028
(Recommended Changes to Publications and Blank Forms) or DA Form 2028-2 located
in the back of this manual, direct to Commander, US Army Troop Support and Aviation
Materiel Readiness Command, ATTN: DRSTS-MTT, 4300 Goodfellow Blvd., St. Louis,
Missouri 63120. A reply will be furnished directly to you.
1. Purpose of Modification. The purpose of this modification is to rewire the anti-collision/navigation light circuit to
receive power from the DC primary bus instead of the DC secondary bus. This permits these lights to operate during
rotor coast down as required by AR 95-1.
2. Priority Classification. This modification is classified as NORMAL.
A. Equipment in Use (Including Equipment in Supply or Maintenance Activities Below Depot Level and Equipment
in Administrative Storage). Equipment in use will be modified as soon as practicable but no later than the scheduled
completion date. Equipment not modified after expiration of MWO completion date will be reported as NORM/NOT
READY in accordance with applicable Army Regulations.
b. Equipment in Wholesale Depot Supply or Maintenance Activities. All MWOs, to include MWO which have been
incorporated into DMWR, will be accomplished on serviceable material prior to issue and/or subsequent to scheduled
completion date. Operational project stock stored at the depots will be modified concurrently with depot stock. Issue of
unmodified material is prohibited. The MWO will be applied to unserviceable material during scheduled depot
maintenance.
c. Prepositioned Stock. Equipment which is prepositioned will be modified during cyclic maintenance and will be
consistent with TM 38-450.
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