# c Hamilton Sundstrand
A UnitedTechnologies Company MAINTENANCE MANUAL 14SF-7

Information Subjectto Export Control Laws 

### P5185

The technical data In this document (orfile) Is controlled forexport underthe ExportAdministration Regulations (EAR), 15 CFR Parts 730-774. VIolations ofthese laws may be subjectto fines and penalties underthe ExportAdministration Act. EAR Export Classification: ECCN 9E991 

# VARIABLE PITCH AIRCRAFT PROPELLER

MODEL NUMBER: 14SF-7

© 1984, 1986-1988, 1993-1995, 1997, 1999, 2006, 2011 Hamilton Sundstrand Corporation PROPRIETARY
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN ARE THE PROPERTY OF HAMIL TON SUNDSTRAND CORPORATION (HSC)

. RECIPIENTAGREES TO HOLD ALL SUCH INFORMATION IN CONFIDENCE AND AGREES IT SHALL BE USED ONLY FOR RECIPIENT'S INTERNAL PURPOSES TO MAINTAIN RECIPIENT'S EQUIPMENT OR AS MAY OTHERWISE BE PERMITTED IN AN APPLICABLE AGREEMENT BETWEEN RECIPIENT AND HSC. THIS DOCUMENTAND THE INFORMATION CONTAINED HEREIN SHALL NOT BE USED FOR ANY OTHER PURPOSE, INCLUDING THE CREATION, MANUFACTURE, DEVELOPMENT, OR DERIVATION OF ANY REPAIRS, MODIFICATIONS, SPARE PARTS, DESIGN, OR CONFIGURATION CHANGES, OR TO OBTAIN FAA OR ANY OTHER GOVERNMENT OR REGULATORYAPPROVAL FOR SAME. RECIPIENTAGREES NOTTO DISCLOSE SUCH INFORMATION TO ANY THIRD PARTY, EXCEPT AS MAY OTHERWISE BE PROVIDED FOR IN AN APPLICABLE AGREEMENT BETWEEN RECIPIENT AND HSC. COPYING OR DISCLOSURE OF THIS DOCUMENTAND THE INFORMATION CONTAINED HEREIN BYANYONE WITHOUT HSC'S PRIOR WRITIEN PERMISSION IS NOT AUTHORIZED AND MAY RESULT IN CRIMINAL AND/OR CIVIL LIABILITY. The data in this documentwere developed onlyto maintain systems and/or parts manufactured by orfor Hamilton Sundstrand orapproved by Hamilton Sundstrand. The data may not be applicable to any other systems and/or parts, regardless oftheir apparent similarity to systems and/or parts manufactured by orfor Hamilton Sundstrand or approved by Hamilton Sundstrand. Do not rely in anyway on data in this documentto maintain orotherwisesupportsystems and/or parts thatwere not manufactured by orfor Hamilton Sundstrand orapproved by Hamilton Sundstrand without evidence that the Federal Aviation Administration or other regulatory agency has determined that the data in this document is valid for such use.



## PROPELLER SYSTEM MAINTENANCE MANUAL

AIRWORTHINESS LIMITATIONS SECTION - FAA APPROVED REMAINDER OF MANUAL - FAA ACCEPTED

CAGE Code: 73030 

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### AIRWORTHINESS LIMITATIONS 1. General A. The airworthiness limitations section is FAA approved and specifies maintenance required to be followed when complying with 

### §§ 43.16 and 91.403 ofthe Federal Aviation Regulations unless an alternative program has been FAA approved. 2. Critical Part Inspections A. The components listed in Table AL-1 require inspection to assure continued airworthiness. Component assemblies must be removed from service and subjected to the required inspections. B. Critical Part Inspections accomplished in accordance with the CHECK section ofthe applicable Component Maintenance Manual, atthe intervals given in Table AL-1, satisfy the requirements ofAirworthiness Directive (AD) 96-25-20 as an alternate method of compliance as approved by letterfrom the Manager, FAA Boston Aircraft Certification Office, on June 3,1999. C. It is the responsibility ofthe operator to monitorthe flight hours for each component listed in Table AL-1. Table AL-1. Propeller Components With Mandatory Inspections
ITEM PART NO. INSPECTION INTERVAL (FLIGHT HOURS) ActuatorAssembly* 790180-3, -2 Maximum 10,500 hour intervals Oil TransferTube and 814829-1 Initial Inspection***- within Retainer* 782515-1 6,000 hours or 3 years after the effective date ofAD 96- 25-20 (February 7,1997) Repeat Inspection
- Maximum 10,500 hour intervals Propeller Control Unit** (PCU) 782490-5, A5, -9, A9, -10, A10, Initial Inspection***- within -14, A14, -17, A17, -28, A28, 6,000 hours or 3 years after -39, A39, -50, A50 the effective date ofAD 96- 25-20 (February 7,1997) Repeat InspectionMaximum 10,500 hour intervals * Do the inspections forthese components in accordance with Component Maintenance Manual 61-13- 02. The oil transfer tube can be inspected using Maintenance Manual P5185. ** Do the inspections forthese components in accordance with Component Maintenance Manual 61-21-03. *** Parts manufactured after the effectivity date ofAD 96-25-20 (February 7, 1997) have metthe initial inspection requirement (paragraph 2.(a)) by an alternate method ofcompliance as approved by letterfrom the Manager, FAA Boston Aircraft Certification Office, on June 3, 1999. Use ordisclosure ofthis data is subject to restrictions on the TiUe Page ofthis document. P5185 

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### 3. Ballscrew Spline Inspection A. The internal spline ofthe ballscrew in the PCUs listed in Table AL-2 requires inspection to assure continued airworthiness. Component assemblies must be removed from service and subjected to the required inspections at intervals established in AD 95-22-12. The intervals are based on the time since new ortime since last inspection. Do the inspection in accordance with the CHECK section ofChapter 61-22-00 (Propeller Control and Adapter). B. It is the responsibility ofthe operatorto monitorthe flight hours forthe PCU. Table AL-2. Propeller Control Unit Components With Mandatory Inspections ITEM PART NUMBER INSPECTION INTERVAL Propeller Control Unit (PCU) 782490-5, AS, -9, A9, -10, See Airworthiness (Without Quill Damper, and A10, -14, A14, -17, A17 Directive 95-22-12 without Secondary Drive Quill) Propeller Control Unit (PCU) 782490-28, A28, and PCUs See Airworthiness (With Quill Damper, and with the marking Directive 95-22-12 without Secondary Drive Quill) "SB14SF-61-67" on the Identification Plate 

### 4. PCU Primary Quill Torque Check A. The PCU Part Numbers listed in Table AL-3 are equipped with a secondary drive quill and require an inspection to assure continued airworthiness. Component assemblies must be subjected to the required inspections at intervals established in AD 95-22-12

. The intervals are based on the time since new ortime since last inspection. Do the inspection in accordance with the CHECK section of Chapter 61-22-00. B. It is the responsibility ofthe operatorto monitorthe flight hours forthe PCU. Table AL-3. Propeller Control Unit Components With Mandatory Inspections
ITEM PART NUMBER INSPECTION INTERVAL (FLIGHT HOURS) Propeller Control Unit (PCU) 782490-39, A39, -50, A50 See Airworthiness Directive 95-22-12 

### 5. Special Instructions A. Ifthere is evidence of overspeed, overtorque, impact damage, or lightning hits, then do the applicable inspection in accordance with the referenced paragraphs below. Upon completion ofthe applicable inspection, complete the appropriateform (see Figure 502, Figure 503, and Figure 504 in the CHECK section ofChapter 61-1 0-00). If necessary, make sure that a report ofthe incident is provided to the Federal Aviation Administration (FAA) in accordancewith FAR 21.3 requirements. Also in the CHECKsection ofChapter 61-10-00:

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• Referto paragraph 6, lnspectjon/Checks After Overspeed, ofthe CHECK section of Chapter 61-10-00. • Referto paragraph 7, Inspection/ChecksAfter Oyertorgye, ofthe CHECK section of Chapter61-10-00. • Referto paragraph 8, Inspection After Impact, ofthe CHECK section ofChapter 61- 10-00. • Referto paragraph 9, Inspection After Lightning $trikes, ofthe CHECK section of Chapter 61-10-00. 6. Major Inspection Interval 

### A. Refertothe Check Section ofComponent Maintenance Manual 61-13-02for instructions on howto do a major inspection. B. The major inspection intervals in operating hours are listed in Table AL-4. It is the responsibility ofthe operatorto monitorflight hours for each component listed in Table AL-4 and to makesurethat no component remains in service beyond its listed inspection interval time. C. In addition to the published operating time limitsfor blades and hubs, the requirementfor repetitive Ml ofthese components will be no laterthan seven (7) years (or 84 months) since the Date Since Installation (DSI). The DSI will begin upon the initial installation after the most recent Ml or initial installation after production. D. Propeller blades and hubs must now be subjected to Ml based on published operating time limits forthe component or 7 years from the DSI whichever comes first. Table AL-4. Major Inspection Intervals INSPECTION INSPECTION ITEM PART NUMBER INTERVAL INTERVAL (FLIGHT HOURS) (CALENDAR TIME) Hub 782701-4, 782701-5 10,500 7 Years Outer Bearing Race* 782301-1 10,500 Not Applicable Inner Bearing Race 782303-1 10,500 Not Applicable (two-piece) Blade and Pin Assembly SFA13G1ROA, 10,500 7 Years SFA13M1ROA, SFA13M1POA, SFA13U1ROA, SFA13U1POA Actuator Assembly 790180-2, 790180-3 10,500 Not Applicable *>>DCC<< The outer bearing race must be removed, discarded and replaced at each major inspection interval (see CHECK section ofComponent Maintenance Manual61-13-02). It is permissible to use the propeller hub time to track the total time ofthe outer bearing race.

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