Attachment_0012_MEO_B2142_W58RGZ-19-R-0050.pdf

MAINTENANCE ENGINEERING ORDER

(AMCOM Reg. 750-2)

MEO NO.

DATE PAGE 1 of

TITLE Tolerances Unless otherwise noted, dimensions are in inches and tolerances are:

Fractional ………………… ± 1/32 Decimal ………………... ± 0.010 Angular ………………… ± ½°

APPLICABILITY CSI Critical Characteristic Affected?

Impact Statement Attached?

REFERENCES FOR RDECOM USE ONLY

DOCUMENT(S) AFFECTED

PURPOSE OR PROBLEM

PROJECT ENGINEER ENGINEERING REVIEW ENGINEERING RELEASE

MED FORM 5-DEC-09 1401-R-E

B 2142 Oct 15, 2015 2

UH-60A/L Tail Rotor Blade Assembly, 70101-11200-044 (NSN 1615-01-088-3230), 70101-31000-043 (NSN 1615-01-113-8188) - added alternative COTS cut-out wire for removal of centering plug (70101-11104-101)

Administrative

INTERIM USE OF THIS MEO IS AUTHORIZED

UNTIL AFFECTED DOCUMENT IS UPDATED.

MEO CHANGE TYPE

4) Normal - Can be implemented with normal priorityPRIORITY IMPLEMENTATION CATEGORY

UH60 DAA

DMWR 1-1615-287 (30 December 2011)

B163243, B167838, B178745

DOCUMENT CHANGE IS REQUIRED Verification: Hands-On Table-Top None

3-11.7 (Inspection for Bond Voids): Added alternative tap testing methods; 3-13.14 (Replace Spar Plug): moved CAUTION statement before step a (drilling or melting a hole in the spar plug) and added COTS safety glass cut-out wire (new item 121) as alternative to local fabrication of a twisted stainless steel wire handsaw; 4-2.4 (Install Boot): corrected NSN for teflon tape (App C, item 39) per production drawing; added Acetone (ASTM-D329) as approved pre-bond surface cleaning solvent.

GRZELECKI.DAN

IEL.P.125929525

Digitally signed by

GRZELECKI.DANIEL.P.1259295250

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=GRZELECKI.DANIEL.P.1259295250 Date: 2015.10.13 11:02:40 -05'00'

GONZALEZ.JAC

OB.A.145582119

Digitally signed by

GONZALEZ.JACOB.A.1455821190

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=CONTRACTOR, cn=GONZALEZ.JACOB.A.1455821190 Date: 2015.10.09 10:11:07 -05'00'

Jacob Gonzalez

HORN.REINHOL

D.J.1087783495

Digitally signed by

HORN.REINHOLD.J.1087783495

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=HORN.REINHOLD.J.1087783495 Date: 2015.10.13 11:19:05 -05'00'

Daniel Grzelecki Ron Horn PUBLICATION CHANGE REQUEST: REQUEST THAT THE FOLLOWING DATA BE INCLUDED IN THE NEXT

CHANGE OR REVISION TO THE PUBLICATION IDENTIFIED ABOVE.

WP NO. PAGE

NO.

PARA-

GRAPH

FIGURE/

TABLE

NO.

CHANGES

(EXACT WORDING OF CHANGES MUST BE GIVEN)

3-32

3-11.7.1

3-11.7.1 .d.

REPLACE 3-11.7.1 with the following:

"Void Inspection Method. A coin, as described below, or similar device such as a small hammer, may be used for tap testing to determine the size and shape of bond separations, as indicated by a dead sound, between skin and honeycomb core and skin and abrasion strip bond areas. Alternative tap testing tools must be capable of identifying local flaws with the same degree of accuracy as the coin and have round smooth edged of sufficient radius to prevent damaging the material when tap testing. Tap testing shall be performed by experienced personnel."

ADD new paragraph d. as follows:

"Ultrasonic devices may be used to supplement tap testing for bond separation, especially in cases where tap testing is inconclusive, provided reliability of this method has been established."

Distribution Statement D:- Distribution authorized to Department of Defense and U.S. DoD contractors only to protect critical technology effective as of 26 June 2014. Other requests for this document must be referred to U.S. Army Aviation and Missile Research, Development and Engineering Center, ATTN: RDMR -AEM , Corpus Christi, TX 78419-5211

MED FORM 18 NOV 2014

W58RGZ-17-R-0237

Attachment 0012

MAINTENANCE ENGINEERING ORDER

(AMCOM Reg. 750-2) Continuation Sheet

MEO NO.

PAGE of

WP NO. PAGE

NO.

PARA-

GRAPH

FIGURE/

TABLE

NO.

CHANGES

(EXACT WORDING OF CHANGES MUST BE GIVEN)

MED FORM 15-DEC-09 1401-R-E

3-93 & 3-94

C-1

C-7(C-8 blank

C-3

3-13.14.

a.

3-13.14.

a.(2)

Table C-1.

RELOCATE "CAUTION" presently located after step a, to before step a.

ADD step a.(2) as follows:

"(2) Prefabricated safety glass cut-out wire (App C, item 121) may be used as an alternative to local fabrication of a twisted stainless steel wire hand-saw."

ADD the following items:

ITEM NATIONAL STOCK DESCRIPTION U/M

NUMBER NUMBER

4 6810-00-223-2739 Acetone, ASTM-D329 PT

121 Tightwire Auto Glass RL Cut-Out Wire, TW 72

(Equalizer) or equivalent

CHANGE the the NSN for item 39 to the following:

ITEM NATIONAL STOCK DESCRIPTION U/M

NUMBER NUMBER

39 5970-00-812-7387 Teflon Tape RL

TG8105 (71643)

MED FORM 18 NOV 2014

B 2142

W58RGZ-17-R-0237

Attachment 0012