Attachment_0004_MEO_B1576A_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 1576 Rev. A Oct 30, 2014 3

Tail Rotor Blade Horn Assembly (PN 70101-11220-042/102) - Addition of Local Blend Limits in Overhaul Inspection Procedure

Technical

INTERIM USE OF THIS MEO IS AUTHORIZED

UNTIL AFFECTED DOCUMENT IS UPDATED.

MEO CHANGE TYPE

3) High - Has a business or process impactPRIORITY IMPLEMENTATION CATEGORY

UH60 DAA

DMWR 1-1615-287 dated 30 December 2011 TN 127083

MEC B179093, B181417

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

Add minimum material condition dimensional limits to overhaul inspection procedure for local blending repair of horn assembly. (Rev. A - Corrects "Reference Letter "F" Figure: horn box section minimum wall thickness , WAS .170 min, NOW: .200 min.)

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: 2014.10.27 14:18:11 -05'00'

MEDRANO.RICH

ARD.P.12719978

Digitally signed by

MEDRANO.RICHARD.P.1271997864

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=MEDRANO.RICHARD.P.1271997864 Date: 2014.10.09 13:26:06 -05'00'

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: 2014.10.27 14:40:31 -05'00'

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)

3-46

3-47

3-47

OIP 6,

No. 2

No. 3

No. 9

Change No. 2 as follows:

"REF LTR: F"

"REQUISITE: Damage not deeper than 0.008. Corner damage not deeper than 0.018. Repair per paragraph 3-13.4.1"

Change No. 3 as follows:

"REF LTR: F"

"REQUISITE: Not deeper than 0.008 on horn surface. Repair per para 3-13.2. If corrosion exists on horn and extends under the bond line between the horn and blade paddle, no repairs are allowed."

Change Item 9 as follows:

"REF LTR: F"

"Requisite: Not greater than 0.5001 inside diameter. Repair per 3-13.4. Note: For horn bushing installation bore damage beyond

0.5001 see oversize bushing repair 3-13.4.5."

Add Figure: "REF LTR F: Minimum Material Dimensions After Repair Per OIP Parameters" found on page 3 of this MEO.

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 26 JUN 2014

W58RGZ-17-R-0237

Attachment 0004

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

3-54 3-13.2.e

3-13.2.f

3-13.4.1.a

3-13.4.1.a .1

3-13.4.1.d

Replace with the following:

"e. Blend out treated areas by blending to a minimum 10 to 1 length to depth ratio in all directions using an abrasive as course as 80-grit and finishing with a finer grit aluminum oxide abrasive cloth (APP C,item 41) as required to establish a 125 RMS finish or better. Blend 0.001-0.002 inch beyond visible depth of damage to ensure complete damage removal. Do not blend beyond the limits specified in OIP 6 REF LTR F."

Add f. as follows:

"f. Remove surface flow of metal in blended area(s) by etching with Keller's etchant per 3-13.4.2.b."

Replace with the following:

"a. Completely remove scratches, nicks, and burrs from damaged surfaces by blending to a minimum 10 to 1 length to depth ratio in all directions using an abrasive as course as 80-grit and finishing with a finer grit aluminum oxide abrasive cloth (APP C,item 41) as required to establish a 125 RMS finish or better.

Blend 0.001-0.002 inch beyond visible depth of damage to ensure complete damage removal. Do not blend beyond the limits specified in OIP 6 REF LTR F.

Add a.1 as follows:

"a.1. Remove surface flow of metal in blended area(s) by etching with Keller's etchant per 3-13.4.2.b."

Replace with the following:

"d. Paint reworked area per paragraph 3-13.34."

MED FORM 26 JUN 2014

B 1576 Rev. A

Continuation Sheet

MEO NO.

PAGE of

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

MED FORM 26 JUN 2014

B 1576 Rev. A

RDMR-AEM

MEMORANDUM FOR RECORD:

SUBJECT: Impact of AED Maintenance Engineering Order (MEO) on maintenance using ,affecting system:

Enclosed MEO is issued by this office and is provided as part of our Technical Data user support mission.

4. THIS MEO CHANGES THE FOLLOWING (Check all that apply):

1.

Consumables

Materials

Expendables

Repairable Bill of Materials (RBOM)Impact

3. PRIORITY IMPLEMENTATION CATEGORY :

6. :

. Point of contact for this action is

2. FOR AMCOM ACQUISITION CENTER USE ONLY:

This MEO was written as a request from a contractor/KO on an active M&O contract.

Request that MEO be transmitted to the contractor as soon as possible.

b.Items checked in this area are considered Normal Priority Implementation Category.

Illustrated Parts Breakdown Change Mandatory Replacement Part

TSO/TSN Change Configuration Change

Publication New Change

Hardware Tooling Equipment

New/Revised Procedure/Process

Process Improvement Project Inspection

Special Process Testing Cost Savings a.Items checked in this area are considered High Priority Implementation Category.

5. Reason(s) MEO Written:

Other

Other

B 1576 Rev. A

DMWR 1-1615-287 dated 30 December 2011 UH60

B 1576 Rev. A

3) High - Has a business or process impact

CCAD Request

Sikorsky

This MEO supports TN 127083

Richard P. Medrano

MEDRANO.RICHARD.P.12

71997864

Digitally signed by MEDRANO.RICHARD.P.1271997864 DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=MEDRANO.RICHARD.P.1271997864 Date: 2014.10.09 13:26:32 -05'00'