M7 Aerospace SB CC7-76-004: No revision named, text

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Page 1Open in PDF

P.O. Box 790490 • San Antonio, Texas 78279–0490 • (210) 824–9421 TO: HOLDERS OF SA227 COMMUTER CATEGORY SERVICE INFORMATION

MANUALS Attached is SA227 Commuter Category Service Bulletin CC7-76-004, REPLACE/REWORK

PROPELLER PITCH CONTROL (PPC) ASSEMBLIES PER HONEYWELL SERVICE BULLETIN TPE331-72-2190. Issued: March 17, 2015.

An operator reported that the Propeller Pitch Control (PPC) input lever to the Propeller Pitch Control (PPC) shaft disconnected and the crew were unable to retard the power to the engine. Some Propeller Pitch Control (PPC) assemblies, PN 869130-11 thru -14, -16 thru -19, -30 and PN 895481-1, -2, -4 thru -7, -17 thru -20, -22, do not have an internallythreaded hole in the splined end of the shouldered shaft, PN 865567-2 and PN 895472-2.

The threaded hole in the splined end of the shouldered shaft can be used to accommodate a secondary retention feature for the aircraft control linkage interface. The secondary retention feature is supplied by the aircraft.

Please insert the attached revised Chapter 76 Index pages.

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P.O. Box 790490 • San Antonio, Texas 78279–0490 • (210) 824–9421

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CHAPTER 76–ENGINE CONTROLS Issued: January 6, 1995 Revised: March 17, 2015 CHAPTER 76 INDEX Page 1 of 1

NUMBER DATE TITLE AIRCRAFT EFFECTIVITY SA227 SERIES Commuter Category 76-001 01-06-95 Positive Safety of Power SA227-CC, S/N CC784, Control Cable to Lever Attach 790-872 Point Clevis, and Inspection for SA227-DC, S/N DC784, Security of Attaching Hardware 790-872 of Power Control Cable to P/N 26-21505 Bracket.

76-002 03-01-96 Positive Safety of Attaching SA227-CC, S/N CC784, (R) 03-13-96 Hardware for Engine 790-872 Power/RPM Control Cable SA227-DC, S/N DC784, Housings to Pedestal Bracket 790-872 P/N 26-21505.

76-003 05-16-14 Inspect Power Levers in All SA227-CC/-DC Airplanes Pedestal for Cracking and/or Excessive Wear.

76-004 03-17-15 Replace/Rework Propeller All SA227-CC/-DC Airplanes Pitch Control (PPC) Assemblies per Honeywell Service Bulletin TPE331-72-2190.

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P.O. Box 790490 • San Antonio, Texas 78279–0490 • (210) 824–9421

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Issued: March 17, 2015 CC7-76-004 Page 1 of 2

SERVICE BULLETIN SA227 SERIES

COMMUTER CATEGORY

ENGINE CONTROLS SUBJECT: REPLACE/REWORK PROPELLER PITCH CONTROL (PPC) ASSEMBLIES PER HONEYWELL SERVICE BULLETIN TPE331-72-2190

1. PLANNING INFORMATION A. Effectivity SA227-CC, Metro 23 aircraft, S/N CC827, CC829, CC840, CC841-CC844 operating with TPE331-11U-601G, TPE331-11U-602G, TPE331-11U-611G, or TPE331- 11U-612G engines installed.

SA227-DC, Metro 23 aircraft, S/N DC784, DC790-DC826, DC828, DC830-DC839, DC845-DC901, DC903 operating with TPE331-12UA-701G, TPE331-12UAR- 701G, or TPE331-12UHR-701G engines installed.

B. Reason:

Some Propeller Pitch Control (PPC) assemblies, PN 869130-11 thru -14, -16 thru -19, -30 and PN 895481-1, -2, -4 thru -7, -17 thru -20, -22, do not have an internally-threaded hole in the splined end of the shouldered shaft, PN 865567-2 and PN 895472-2. The threaded hole in the splined end of the shouldered shaft can be used to accommodate a secondary retention feature for the aircraft control linkage interface. The secondary retention feature is supplied by the aircraft.

C. Description:

Perform Honeywell service bulletin TPE331-72-2190 to replace/rework the Propeller Pitch Control (PPC) Assembly on both engines of the aircraft. This service bulletin gives instructions to rework the PPC assemblies, PN 869130-11 thru -14, -16 thru -19, -30 and PN 895481-1, -2, -4 thru -7, -17 thru -20, -22 , to incorporate a threaded hole in the splined end of the shouldered shaft, PN 865567-2 and PN 895472-2, as applicable. This service bulletin also gives authorization to install PPC assemblies, PN 70000295-11 thru -14, -16 thru -19, -30 or PN 70000298-1, -2, -4 thru -7, -17 thru -20, -22 as applicable, that have been identiﬁ ed as having a shouldered shaft with the threaded hole.

D. Compliance:

Highly Recommended E. Approval:

FAA Approved for Engineering Design.

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Issued: March 17, 2015 CC7-76-004 Page 2 of 2

SERVICE BULLETIN SA227 SERIES

COMMUTER CATEGORY F. Manpower:

M7 Aerospace estimates 4 manhour to accomplish this task. This estimate is for direct labor only, accomplished by an experienced crew. Adjust the estimate with operator task hour data if necessary.

G. Tooling – Price and Availability:

None.

H. Weight and Balance:

Negligible NOTE: It is recommended the aircraft operating weight be reestablished after incorporating 20 service bulletins classiﬁ ed as having 'negligible' impact on aircraft weight and balance. This recommendation is derived from data provided in FAA Advisory Circular 120-27.

I. References:

Honeywell Service Bulletin TPE331-72-2190 NOTE: References are for manufacturer’s use only.

J. Other Publications Affected:

SA227 Illustrated Parts Catalog (IPC)

2. ACCOMPLISHMENT INSTRUCTIONS A. Accomplish Honeywell Service Bulletin TPE331-72-2190.

B. After accomplishment of the service bulletin, ensure power control cables on both engines are rigged, if required, in accordance with SA227 Maintenance Manual, Chapter 76-00-10.

C. If power control cables were disturbed in Step 2.B., perform engine ground run in accordance with SA227 MM, Chapter 71-00-30.

D. If further assistance with service bulletin TPE331-72-2190 is required, please contact Honeywell Technical Support at AeroTechSupport@honeywell.com. Operators in the U.S. can call toll free (855.808.6500. All international operators should call (602) 365- 6500.

E. Complete maintenance entries in aircraft logbook per 14 CFR 43.9.

F. Complete and return Service Bulletin Compliance Form to M7 Aerospace Technical Support at MetroTech@M7Aerospace.com or fax to 210.820.8626.

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SERVICE BULLETIN COMPLIANCE FORM CC7-76-004 TO: OPERATOR OR SERVICE FACILITY ACCOMPLISHING BULLETIN Please complete this compliance form, and mail according to the instructions on the reverse side.

Thank you for returning this form.

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Aircraft Model Aircraft Serial Number Bulletin Issue Date Revision Date Aircraft Registration Number Operator/Owner Time on Aircraft Date Accomplished Comments

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M7 AEROSPACE LP P. O. BOX 790490 SAN ANTONIO, TEXAS 78279–0490 (Staple) ATTN: Technical Support Department Fold Here to Mail Fold Here to Mail Place Stamp Here