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Carbon Block
Part Number AA-3074

AA-3074, CARBON BLOCK ASSY

Part # AA-3074

CARBON BLOCK ASSY


$395.25 Retail Price: $494.06
Expected ship date is 11-20-2026.

Get everything you need

CARBON BLOCK SUB-ASSY

$165.21 / was $206.51

Expected ship date is 11-20-2026.
COTTER PIN, 1/16" X 1/2"

$0.080 / was $0.09

In Stock
COTTER PIN, 1/16" X 3/4"

$0.060 / was $0.07

In Stock

Product Details

Specifications

Approval
FAA PMA
Condition
New
Manufacturer
Tempest
Dimensions
L: 2.5 x W: 1 x H: 2 in
Weight
0.09 lbs
Unit of Measure
Each
McFarlane Part Number
AA-3074

Product Description

Pilatus PC-12 Beta Feedback Carbon Block Assembly

AA-3074 FAA-PMA Replacement for Hartzell A-3074 and Pilatus 968.29.11.375

  • FAA-PMA direct replacement for Hartzell A-3074 and Pilatus 968.29.11.375
  • Complete assembly includes AA-3026 block assembly (carbon block and bracket), yoke assembly, MS20392-2C53 clevis pin, and cotter pin
  • Supplied with material stock so you can fit side clearance to the AMM range of 0.001 to 0.010 in.
  • Eligible for PC-12, PC-12/45, PC-12/47, and PC-12/47E

WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources

Eligible Aircraft
Make Model Start S/N End S/N Eligibility Chart
Pilatus PC-12PC-12S/N 101 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZEligibility Chart 1545
Pilatus PC-12/45PC-12/45S/N 101 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZEligibility Chart 1545
Pilatus PC-12/47PC-12/47S/N 101 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZEligibility Chart 1545
Pilatus PC-12/47EPC-12/47ES/N 101 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZEligibility Chart 1545
Cross Reference

Reference only: Please verify the product is eligible for your aircraft before adding to your cart.

  • 968.29.11.375
  • A-3074
FAQs

What comes in the AA-3074 assembly

The complete assembly: the AA-3026 block assembly (carbon block and stainless bracket), the AA-3025 yoke assembly, an MS20392-2C53 clevis pin, and a cotter pin.

What are the signs of a worn PC-12 carbon block?

Side clearance to the beta ring greater than 0.010 in., visible wear on the side faces, chipping or cracking, or a block that binds or won't rotate freely in the reversing lever.

How do I fit a new carbon block to the beta ring?

Remove material evenly from the side faces of the carbon block on a flat reference surface until side clearance to the beta ring is between 0.001 and 0.010 in., per the Pilatus maintenance manual.

Will my new carbon block need to be sanded?

Possibly. The carbon block can be sanded as necessary to bring side clearance to the beta ring within the range specified in the Pilatus maintenance manual.

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