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# BEL~~CA® ALEXANDRIA AJRCR.Af='r LLC 

### 2504 Aga 

### Dri.ve Alexandria 

### MN 56308 320/763-4088 FAX 320n63.409S 

### www.beltanca-aircraft.corn SERVICE 

### LETT ER 85 REVISION 

### B FAA . Approvad 

# No.BI55 P. **4/~**



### 8 Aplil2004 SU8JECT: 

### HORIZONTAL STABILIZER 

### FUS13...AGE ATTACHMENT TUBE AND 

### CARRY-THRU TUBE SUPPORT BRACKET INSPECTION 

### ANI,) RE:PAIR 1. INTRODUCTION Alexandria Aircraft LLC has received 

### Jlew fieJd reports of cracks in the vertical tuJ:)e that 

### supports the horizontal stablriz er . llle cracks were found on both lefl and right tubes and ap pear to 

### have started near the. point w here th"e hori zontal stabilizer car()'-t h ru tube support

**br ~e**  **t** top flange is 

### welde. d .to th e vertical f uselage 

### tube. cracks also were fou nd 

### in the 

### cany. th ru 

### tube **sup~ort** bracket rtself 

### (botl'J s i de s} betwee n I he horizontal stabiliZe r ca ny-thru tube a nd vertical tube welds. We 

### believe t his current p ro
_ ble m Is rel ated to the 1975 prob lem whl9h 

### resulte d 

### if.! th e 

## is5ue of Servi ce **~etter 8~A:**  

### Horizonlal S1abilizer AttachmeoiTube PN1902Q2·3Z lns pacllon ·ari"d Repair and 

### Aiiworthiness Directive 75-20-06: Detect Cracks in Eith er Vertica l Side F uselage Tube Adja cen t to Horizon tal 

### Stabilizer. TIJis revision 

### changes the Service Letter1o 1) require 

### a 100 hour repetitive i nspection Whether 

### Bellanca Service Kit 

### SK1234789-0004: Gusset -Stabiliz er. Installation a nd Drag Bracestabifizer. lostall§tlon Is or is not installed, and 2) redefine the area to be inspected. This reVision replaces 

### a1J prior versions of this Se Nice Letter . 2. AIRCRAFT AFFECTED ; Models 

### 14-19-3A,
**17~0,** 

### 17...31 , 17·31TC, 17-30A, 

### 17

- 31A and 

### 17·31ATC All 

## Senal Numbers. This Service 

### letter describes procedur es 

### Which apply to standard production airctaft. It may not appl y d i rectly to ai rcraft which have bee n field modified or a f ew production aircraft. which inco rporate atte ma.te designs . 

### Contact the Alexand ria 

### Aircraft I,.LC Service Department 

### if you have any questions conce rning 

### this Se i'Vi ce Letter. 

### 3. COMPLIANCE. Alexandria Aircraft LLC recommends 

### that the 

### inspection presented herein be 

### accomplished 

### With the accumulation of300 hours time In service orwithin t he next 25llours tlme in 

### service after the effective Revision B date of lllis 

### sarvinA Letter, whicheve r occurs 

### ra,rer. llnlcss already accomplis hed . Th e Inspecti on Win 

### be repeated thereafter at I ntervals oot to excead 100 hours time In se rvice from the last 

### inspection. 4.1NSPECTJON 

### Visually Inspect the aft 

### fuselage truss 

### With access thl"tl 

### the existing iJlSpection 

### covers. Look for cracks in the areas described in Figures 1 and 2 

### (shown With and without the Sei'vlce 

### Kit inst alled) with views looking o utbGal'd towards the left side; the light side Is the mirror image. Look all around 

### the vertical tubes whi ch support 

### the horizontal stabilizer on both sides of the fuselage paylnQ special attention to me area where the horizontal stabilizer **~ny...th!U tu~**  support 

### bracket flange 

### is welded to 

### the vertical **fu~lag~** tube. 

### lfthe.S arv ioe 

### 1<it is not 

### iri.stalled. the Inspection also should iook at 1he upper portion of th e 

### verlic;al-tube. FlnaUy, look ·at the cacry -th ru tube support bracket at the edge 

### ofthe weld a rou nd the 

### l'Ut side 

### ofthe carry- th ru tube (inboard and outbOard sides} . Page 1 of2\!· £ l' l·' 1;UtH' M



### AL **JiArt I~**  

### A I HI.; KAt- 1 L l l:

**Ho BH~**  

## p . 5/5 BELLANCA 

### I 

### Alexandria Aircraft LLC Service 

## letter 858 FM Approved 8Aprll04
I NSPE CT HERE AU. AROUND TUBE INBO & OUTE D 

### BKT AC lEFT & RI GHT 

# FW D > HS C3ny-Thru T uba Cany-TM.Ilube SuPOQtt Braclc•t F l ,gure 1 : HS Ta ll Support Inspection W ITHOUT

**Se~ Kit**  

### Vie w L ool<itig 

### outboard Left I NS PECT HERE AU.. AROU ND TUB€ INBD & OUTBD BKT AC LEFT & RJQifT
HS . Cai'TY-Thru Tube carry-Ttvu Tube SuDJ)On Srucket Fi gure 2: HS Ta il Support Inspection WITH Service Kit View Looking Outboard 

### Left Note: The folloWifig alrcraft had 

# a prodl.ICIIpn 

## version ofUte Service Kit 

### installed during maoofacture : Mode1 17-3QA , $N 

### 7tl- 30812:and up, Modei17-31A SN 

### 76-32-1 64 a nd up; Model 17 -31ATC S N 

### 76-311 25 - **~ese** a i rcraft are Included fn this inspecti on. 5 . REPAIR If any 

### c ntclci **~refound** as 

# a result 

### ofthe inspe. ctloo **~l'8SBl'lted nere~in,**  the cracked parts must be replaced 

### With 

## FAA
**approv~** zerO- tf

me 

### parts before1 u rther 

### flight, except that the 

### airplane may be 

### n

own in accordance 

# w1m

**FAR 1~7**  

# t oa base 

### wher e th e repair can be p e rfonnsd. 6 . NOTIFY FACTO RY- INSPECT ION RESULTS Pl ease report your findings to Alexandria
**~It** LLC with the foUOWinQ l nfonnatlon: 1) OWn e r 

## Contact Information, 2) 

### Airplane Model and Sel)al 

### Number. 3) Total 

### Tlf!le. 4) were 

### cracks found as a result of the SL85A/AD7 5-

20-06 'in5pectj6ns 

## and was the SeJVfce 

### Kif lostaBed, 5) did you flnd cracks 

### as a result ofthe 

### Inspecti on described here- in and 

### ifso - describe where you found the cta,ck,s. .



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