Regu l atory Eva l uati o n Docket No. FAA- Dir ecto r ate Id ent ifier: -AD 

### Add 1 

### he work hours. parts cost, and number 

### (?!U.S. N!Kisteredprodu<.:ts to I he table below. iVhen you are .finis lied. click 0111he '·Upda te Fields" hut/on to autOJJW/ical!y fill int!t e totals

. 

### Update Fie ld s 

# I

Act i ons and cost estimates are for both l e ft and right thrust reversers (TIR) halves , four TIR halves 

### lfi b h

. . I tota or ot ene:mes on an a a rpl ane . Estimated 

### Costs: Action Costs per Product (e.g., aircraft, eng ine , (e.g., Inspection, propeller, appliance) Work-hours Labor Parts Cos t Total Costs Numb er of Total Cost replacement) ( in c lud e cost (labor+ 

# u.s. for U.S. Fleet Do no/ include oncondi tion cost s here access, testing, (@$85/h parts) R eg i s tered and close- up) our) Prod u cts R

emove T/R halves 

### 36 $ '. {){lj 1,(1**~~** lj(,!) (HI 

### 55 "- 1 

### M-i.3(1() IJ\1 II Figure I & 4

- Remove fire seals, insulation blanket 

### 6.6 retainer/deflector, and 

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# - ,, l (II) ·, .:;C,f Oll 

### 55**~~~** \ 

# "" () fire seal retainers
Fi g ure 2 & 5 - Inst all insu lat ion blanket retainer, fire sea l 

### 10.0 " S50J)(, 9 ,472 "J I P.**~22.no** 

### 55 S'(,

... 1 

### n n( retainers (kept), and seal supports Figure 3 & 6

- Install new fire seals 

## * 1.0 \ 8.).0(1 "-**~--dO** 

### 55 

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### ... ( Identify Left and Right T/R halves 

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e install T/R halves 

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Th e known number of products in compliance: 

### Number Total Cos t s of co mplianc e for 

### U.S. fleet: $944,515 Costs cove r e d under warranty 

### (if known)**Warrant~** 

## * Fire seal part cost is includ ed in the kit (kit# 005W0021-I and -2) cost of$9,472.On-Condition Costs:

.... Action Work-hours Labor cost Parts Cost Cost per Product (e.g., Inspection, (include access, (@$85/hour)

replacemen t) testing, and closeup) Insp ec tion <; 0

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### 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) : 

### Executive Order 12866:
Could the AD be considered a " significant regulatory action"?

# , YES* 0**NO~** 

### *Explanation: 

### DOT Regulatory Policies and Procedures:
Is the AD s ign ificant?

# ' YES* 0**NO ~**  

### *Explanation: Regulatory Flexibility Act: Will the AD have a significan t eco nomic impact on a substantial number of small entities? Explain for either a Yes or No answer.

# ~ YES 

## 0**NO~** 

### Explanation: 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* 

## 0**NO~** 

### *Exp lana tion: