U.S. Deportment of Transporta t ion Federal Aviati o n Administration

January 15 , 2016
Mr. E m e ry P
. W il ts e ODA Ente r pr i se Program Admi ni s trato r Gulfstream Aero s pace Corporat io n P.O
. Box 2206 Savannah, Georgia 31402-2206
Dear 

### Mr. Wiltse: Transport Airplane D i rectorate 1601 Lind Avenue, S.W

. Renton, Washington 98057-3356

Exe mption No
. 13281 A Regulatory Docket No. 

### f AA-2015-2330

This is to inform you that we have amended Exe mption No
. 13281. This l e tte r exp la ins the bas i s for o u r decision a n d descr ibes th e effect ol th e a m endme nt. 

### Th e Ba s i s for· 

### Our D e ci s ion B y letter (e-mail) elated October 22, 2015, you p e titioned the Federal Aviation Administration (FAA) , on behalf of Gulf s tr eam Ae ro s pace Corporation. for an amendme n t to Exemption No. 13281. This exemption p e rtain s to Gulfs tream Mod e l GV l a irplanes o perated for private-use, not for hire , not for commo n ean-iage and provides relief from 

### § 25.813(e) ofTitle 14 , Code of Federal Regulation s ( 1 4 CFR) at Amendment 25-116
. Title 14 CFR 25
. 813(e) s tates th at no door may be in s ta ll ed between any pa sse n ge r seat that is occup iable for takeoff and land in g a n d any passenger emergency exi t. We granted the exe mpt ion with several condi ti o n s based on design tca ture s proposed by Gu l fstream. Your petition for amendment s tates that although Gu lfstream proposed an auto matic stowage feature for the mid- cab in interior door, it was intended as a sa fety fe atur e to suppo rt a request tor approva l for 14 C FR part 135 operati o n s . Since the exemption i s limited to private-use operat ion o nl y, Gulfs tream w i shes to in s tall manu a lly-ope rated midcabin doors in stead of doors with automatic stowi n g features. Therefore, Gulfstream requests the rem ova l of the following four co nditi o n s applicable to automatica ll y -acti vated doors:



### • Co n d iti o n 2 requi res a utomatic stowage of the interi o r door ir the landing gear i s do wn or th e flaps are not fully retracted. The door must remain open until th e land i ng gear and flaps are both fu l ly retracted.



### • Co nditi o n 4 requires that the door must be designed so that it can only be closed (dep loyed) w h en the landing gea r and flaps are fully retracted (a irbo rn e configuration) or for g round mainten ance act iv ity.

### • Co ndi ti o n 5 r eq uires that the door mu st be designed so that for any failure of the closing/ la tc hin g mechanism , the door w ill default to the s towed po s ition. 

### 2

• Conditi o n 6 req ui r es substant i ation th a t th e probab ili ty o f fai lure to eg r ess throug h the main e ntry door , including the probability of failure of b o th inte ri o r doors , i s less than 

### l o-s per Oight h o ur. Your petition for a m e ndment assetts that the above- 

### Iisted conditions ha ve not been present in any of the exis tin g exe mpti ons previou s ly i ss ued. We note that these conditions we re included in Exemption No. 10188 for the Gulfs tream Mod el GVI a irpl ane acoustic and ves tibul e doors , w hi c h are permit ted in part 1 35 operations. Howeve r , we agree that we have not require d th ese cond itions when th e a irc raft ha s been limited to p r ivate u se, not for hire , n ot fo r common ca rr ia ge operat ions. 

### Fe d e ral R eg is t e r P ubli c ation Th e FAA ha s detetmin e d th at good cause exists fo r not publ ishing a summary of th e petition in th e 

### Federal Regis te r for public comment becau se th e re qu ested a men dment to the exe mpti on wo uld not se t a precedent. 

### Our D eci s ion The FAA h as d e te rmin ed th at the j u stifica tion f o r th e issuance of Exe mpt i o n No. 1 328 1 remains valid wi th r espec t to this amendment a nd i s in the public inte r es t. S ince G u lfs tream i s no t installin g



### micl~cabin interior door s w ith a n a ut o matic stow feature a nd the exe mption i s applicable to ai rpl a n es lim ited to pri vate- u sc, not for hire , not for common can· iage ope rat ion; the above-lis t e d conditions are n o t app li cab le. 

### T he E ff ec t of Our D ec is i o n This amendment removes co ndition s 2, 4 , 5, and 6 (lis ted above) from th e limitations for w hich the exemption i s g ra nted. 

### T he G ra nt of A m e nd e d E x e mption Pursuant to the authority co ntained in 49 U.S.C
. 40113 anc144701 , de legate d to me by the Adm ini strator
. 1 g rant Gu l fstream Aerospace Corpo rat ion an amendment to Exe mption No
. 13281 w hi ch re mo ves the cond iti ons numb e red 2
. 4 , 5, and 6 from the list of cond i tions app licable to th i s exempt ion. T h e ope rat in g li mitat ion a nd a ll other co nditi o n s of Exe mption No. 1 328 1 r e main the same. T hi s letter mu s t be attac h ed to , and i s a part of , Exe mption No. 1 328 1.

Jeffrey E. Du vc n Manager , Transpo rt A irplane Directorate A irc raft Ce rtification Servic e