AFS

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December 1 8 , 2015

Exemption No. 14019

Regulatory Docket No. FAA

- 2000

- 8498

Mr. Steve Boser

Engineering Manager

Sensenich Wood Propeller Co., Inc.

2008 Wood Court

Plant City, FL 33563

Dear Mr. Boser :

This letter is to inform you that we have granted your request for exemption. It transmits our

decision, explains its basis, and gives you the conditions and limitations of the exemption,

including the date it ends.

The Basis for Our Decision

By letter dated July 30, 2015 , you petitioned the Federal Aviation Administration (FAA) on

behalf of Sensenich Wood Propeller Co., Inc.

, ( Sensenich ) for an exemption fro m § 45.11(c)

of Title 14, Code of Federal Regulations (14 CFR)

. That exemption, if granted, would allow

Sensenich to stamp a marking on the hub of wooden propellers instead of attaching a metal

plate to the propeller blade.

The FAA has determined that good cause exists for not publishing a summary of the petition

in the Federal Register because the requested exemption would not set a precedent, and any

delay in acting on this petition would be detrimental to Pacific Prowler

.

Although you requested an extension of Exemption No.9800A (copy enclosed), that

exemption expired on October 31, 2015 . Therefore, we are issuing Sensenich a new

exemption

.2

The FAA has issued a grant of exemption in circumstances similar in all material respects to

those presented in your petition. I n G ra nt of E x e m p ti on No. 7559 (c opy e n c l os e d )

, we no t e d

t h a t b eca use of t he f

l a mm a b ilit y p r op er ti e s of a so li d wood e n p r op e ll er

, m oun ti ng a m e t a l t a g

m a y be t he on l y w a y t o p r ov i de a f i re p r oof i d e n ti f

i ca ti on t h a t w il l not be li k e l y t o be l ost or

d e s t r o y e d i n a n acc i d e n t

. How e v er

, a tt ac h i ng a m e t a l t a g p re s e n t s poss i b l e s afe t y r i sks f or

t h e se p r op e ll er s. W e a g ree d w it h the petitioner t h a t

, i n acc i d e n t s i nvo l v i ng d a m a g e t o wood e n

p r op e ll er s, t he p r op e ll e r hub usu a ll y re m a i ns i n t ac t

, t hus p re s er v i ng t he s t a m p e d i d e n ti f i ca ti on.

W e f ound t h a t s t a m p i ng t he hub of t he p r op e ll e r w it h t he i d e n ti f i ca ti on m ar ks w il l ac h i e ve a n

e qu i v a l e nt l e v e l of s afe t y t o t h a t of t he r u l e

.

Having reviewed your reasons for requesting an exemption, I find that

—

 they are similar in all material respects to relief previously requested in the

enclosed Grant of Exemption No. 7559 ;

 the reasons stated by the FAA for granting the enclosed Grant of Exemption

No. 7559 also apply to the situation you present; and

 a grant of exemption is in the public interest.

Additionally, on October 1, 2015, the FAA published an amendment to § 45.11 (c) (80 FR

59032) with an effective date of March 29, 2016. That amendment revised § 45.11(c)

introductory text to read as follows:

§ 45.11 Marking of products.

(c) Propellers and propeller blades and hubs. Each person who produces a propeller,

prope ller blade, or propeller hub under a type certificate or production certificate must

mark each product or part. Except for a fixed

- pitch wooden propeller, the marking

must be accomplished using an approved fir eproof method.

On March 29, 2016, Sensenich w ill no longer need the exemption sought based on the new

language of § 45.11(c).

Our Decision

Under the authority contained in 49 U.S.C. § 106(f), 40113, and 44701, which the FAA

Administrator has delegated to me, I hereby grant Sensenich Wood Propeller Co., Inc., an

exemption from § 45.11(c) to the extent necessary to allow Sensenich to stamp the hub of a

wooden propeller with the identification mark instead of attaching a metal plate to the

propeller blade

. This exemption appli es to all Sensenich wood en propellers produced under

TCDS P

– 170, TC P00001NY, and TCP27NE.3

Therefore, t hi s exemption terminates on March 29

, 2016 unless sooner superseded or

rescinded.

Sincerely,

/s/

Dorenda D. Baker

Director, Aircraft Certificati on Service

Enclosure :

Exemption No. 9800A

Exemption No.7559