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© Piper. Filed by the FAA in regulations.gov docket FAA-2012-0251; AD 2012-10-09 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

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Page 1Open in PDF

ATA: 1120 (OVER) SERVICE NO. 1235

BULLETIN

PIPER CONSIDERS

COMPLIANCE MANDATORY Piper Aircraft, Inc.

2926 Piper Drive Vero Beach, Florida, U.S.A. 32960 Date: November 3, 2011 (M) This Service Bulletin supersedes Service Bulletin 670 in its entirety. Compliance with this Service Bulletin is mandatory for all serial numbers affected, regardless of prior compliance with Service Bulletin 670.

SUBjECT: DATA PLATE INSPECTION MODELS AffECTED: SERIAL NUMBERS AffECTED:

PA-31T Cheyenne II 31T -7820001 through 31T -7820092 PA-31T1 Cheyenne I 31T -7804001 through 31T -7904053; 31T -7904056, 31T -7904057 COMPLIANCE TIME: At the next regularly scheduled maintenance event, but not to exceed the next one hundred (100) hours time in service.

PURPOSE: Piper has become aware that some operators have misunderstood the instructions in Service Bulletin 670, issued in 1979, and modified the aircraft data plate in error.

This Service Bulletin provides detailed instructions for determining the aircraft model, based on the serial number of the aircraft. If required, this Service Bulletin also provides instructions for modifying the data plate to properly identify the aircraft model.

INSTRUCTIONS:

Part I. Inspection Locate the aircraft data plate (Piper Part Number 79644-4), which is mounted on the left side of the fuselage belly, just below the forward part of the cabin door. Examine the markings on the data plate.

For aircraft serial numbers 31T -7820001 through 31T -7820092, the correct aircraft model is PA-31T.

For aircraft serial numbers 31T -7804001 through 31T -7904053; 31T -7904056, and 31T -7904057, the correct aircraft model is PA-31T1.

• If the aircraft model is correctly marked on the data plate, no modification is required. Proceed to Part III Documentation of Compliance.

• If the aircraft model is incorrectly marked on the data plate, modification of the data plate is required.

Proceed to Part II Data Plate Modification.

Page 2Open in PDF

SERVICE BULLETIN NO. 1235 PAGE 2 of 2 Part II. Data Plate Modification Perform the appropriate data plate modification described below, using an acceptable method of permanent marking (metal stamp, engraver, electric pencil, etc.):

For aircraft serial numbers 31T -7804001 through 31T -7904053; 31T -7904056, and 31T -7904057:

• If the aircraft model is incorrectly marked as “MODEL PA-31T” inscribe the numeral “1” behind “PA-31T”, so that after modification, the data plate reads “MODEL PA-31T1”.

For aircraft serial numbers 31T -7820001 through 31T -7820092:

• If the aircraft model is incorrectly marked as “MODEL PA-31T1” cross hatch over the numeral “1”, so that after modification, the data plate reads “MODEL PA-31T 1 ”.

Proceed to Part III Documentation of Compliance.

Part III. Documentation of Compliance Make a logbook entry indicating compliance with this Service Bulletin.

MATERIAL REQUIRED: N/A AVAILABILITY Of PARTS: N/A EffECTIVITY DATE: This Service Bulletin is effective upon receipt.

NOTE: Please notify the factory of any address/ownership corrections. Changes should include aircraft model, serial number, current owner’s name and address.

Corrections and/or changes should be directed to:

PIPER AIRCRAFT, INC.

Attn: Customer Service 2926 Piper Drive Vero Beach, FL 32960