Regulatory Evaluation

Docket No. FAA-2011-0946 Directorate Identifier: 2011-NE-02-AD

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Estimated Costs:

Action

(e.g., Inspection, 

replacement)

Costs per Product (e.g., aircraft, engine, 

propeller, appliance)

Work-hours

(include 

access, testing, 

and close-up)

Labor 

cost 

(@$85/h

our)

Parts Cost Total Costs 

(labor + 

parts)

Number of 

U.S. 

Registered

Products

Total Cost 

for U.S. Fleet

Remove fan blades 6.0 $ 510.00 $47,830 $48,340.00 16 $773,440.00

0.0 $ 0.00 $0 $ 0.00 $ 0.00

0.0 $ 0.00 $0 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

$ 0.00 $ 0.00 $ 0.00

The known number of products in compliance:

Total Costs of compliance for U.S. fleet: $773,440

Costs covered under warranty (if known) $

Special considerations for Economic Analysis (Use this field to explain anything in the Estimated 

Costs table that was assumed or might not be obvious. This field can also be used to explain warranty 

costs):

For turbochargers with no more than 50 hours time in service since new or overhauled 

with the part numbers and serial numbers listed in Hartzell Engine Technologies Service 

Bulletin SB40A, the company will provide warranty and the following economic 

assistance:

Identification: up to 1 hour labor (up to $75 maximum)

Removal and Installation, if necessary: up to 4 hours labor (up to $300 maximum)

Disassembly, Cleaning and Reassembly:
Within North America - for units sent to HET there will be no charge for this work and 

unit will be returned shipping pre-paid by the same method as received.

Outside North America – for units sent to HET there will be no charge for this work and 

will be

returned shipping pre-paid, less any applicable duties, by the same method as received. 

As an

alternative, HET will provide a labor allowance of 3 hours labor (up to US $225 

maximum) for units sent to the nearest facility listed in Hartzell Engine Technologies 

LLC Service Bulletin SB40A.

Executive Order 12866:

Could the AD be considered a “significant regulatory action”?

YES* NO 

*Explanation: 

DOT Regulatory Policies and Procedures:

Is the AD significant? 

YES* NO 

*Explanation: 

Regulatory Flexibility Act:

Will the AD have a significant economic impact on a substantial number of small entities? Explain

for either a Yes or No answer.

YES NO 

Explanation: Small Airplane Directorate data indicates aircraft likely to have the 

formentioned turbochargers are flown (on average) more than 50 hours per year. Hartzell 

Engine Technologies stated the turbocharger center housing on the Cirrus SR22T failed 

approximately 9 months after it had been manufactured and in less than 5 hours of service. 

If it is conservatively assumed that turbocharger center housings manufactured and 

overhauled in the last two years have not accumulated more than 50 hours of service, then, 

according to Hartzell Engine Technologies manufacturing data, less than 10 percent of the 

candidate turbocharger population (a quantity of 264 out of 2761) would require this AD's 

action. In other words, the chance that each aircraft with the forementioned turbochargers 

would be subjected to this AD's actions is less than 1 in 10 - minimizing the impact to an 

insubstantial number of small entities. 

Intrastate Aviation in Alaska:

This AD could affect intrastate aviation in Alaska. Is it appropriate to include specific requirements 

for aircraft operated in Alaska where aviation might be the only mode of transportation?

YES* NO 

*Explanation: Although this AD could affect intrastate avaition in Alaska, it is not 

appropriate to include specific requirements for aircraft operated in Alaska because the 

safety concerns outweigh the benefits of making transportation available. In other words, 
this AD concerns a hazardous safety effect and Alaskan aviation needs to be subjected to 

the formentioned action to mitigate the risk.