;.., 'J· ·J · !.U t ._; I•U~;""j.\ ALtARNUKIA n~KArl ll~ 

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 LETTER 85 REVISION B FAA.Approvad 

No.BI55 P. 4/~ 

8 Aplil2004 

SU8JECT: 

CARRY-THRU 

HORIZONTAL STABILIZER FUS13...AGE ATTACHMENT TUBE AND 

TUBE SUPPORT BRACKET INSPECTION ANI,) RE:PAIR 

1. INTRODUCTION 

the 

Alexandria 

horizont

Aircraft 

al stablriz

LLC has received Jlew fieJd reports of cracks in the vertical tuJ:)e that supports 

started near the. point 

er

w

. 

here 

llle cracks were found on both lefl and right tubes and appear to have 

welde.d .to the vertical 

th"e horizontal stabilizer car()'-thru tube support br ~et top flange is 

bracket rtself (botl'J 

fuselage tube. cracks also were found in the cany. thru tube sup~ort 

We believe this current 

sides} 

p

between I he horizontal stabiliZer cany-thru tube and vertical tube welds. 

Service ~etter 8~A: Horiz

ro_blem Is related to the 1975 problem whl9h resulted if.! the is5ue of 

onlal S1abilizer AttachmeoiTube PN1902Q2·3Z 

and Aiiworthiness D

lnspacllon·ari"d Repair 

Adjacen

irective 75-20-06: Detect Cracks in Either Vertical Side Fuselage Tube 

hour repetitiv

t to Horizon

e 

tal Stabilizer. TIJis revision changes the Service Letter1o 1) require a 100 

Installation and 

inspection 

Drag BraceWhether Bellanca Service Kit SK1234789-0004: Gusset -Stabilizer. 

stabifizer. lostall§tlon 

to be inspected. This 

Is or is not installed, and 2) redefine the area 

reVision replaces a1J prior versions of this SeNice Letter. 

2. AIRCRAFT AFFECTED; Models 14-19-3A, 17~0, 17...31, 17·31TC, 17-30A, 

17-31A and 17·31ATC All Senal Numbers. 

ap

This 

ply 

Service 

directly 

letter describes procedures Which apply to standard production airctaft. It may not 

incorporate atte

to 

ma.

aircraft which have been field modified or a few production aircraft. which 

te designs. Contact the Alexandria Aircraft I,.LC Service Department 

have any questions conce

if you 

rning this Sei'Vice Letter. 

3. COMPLIANCE. 

Alexandria Aircraft LLC recommends 

the accumulation of 300 

that the inspection presented herein be accomplished With 

effective Revision B date 

hours 

of 

time In service or within the next 25llours tlme in service after the 

accomplis

lllis sarvinA Letter, whichever occurs ra,rer. llnlcss already 

time In service 

hed. The Inspection Win be repeated thereafter at Intervals oot to excead 100 hours 

from the last inspection. 

4.1NSPECTJON 

cracks 

Visually 

in 

Inspect 

the areas 

the 

described 

aft fuselage truss With access thl"tl the existing iJlSpection covers. Look for 

installed) with 

in Figures 1 and 2 (shown With and without the Sei'vlce Kit 

Look all around 

views looking outbGal'd towards the left side; the light side Is the mirror image. 

fuselage paylnQ 

the vertical tubes which support the horizontal stabilizer on both sides of the 

support bracket flange 

special 

is 

attention 

welded 

to me area where the horizontal stabilizer ~ny...th!U tu~ 

the Inspection also 

to the vertical fu~lag~ tube. lfthe .Sarvioe 1<it is not iri.stalled. 

cacry-thru 

should iook at 1he upper portion of the verlic;al-tube. FlnaUy, look· at the 

(inboard and 

tube 

outbOard 

support bracket at the edge of the weld around the l'Ut side of the carry-thru tube 

sides}. 

Page 1 of2 
\!· £l' l·' 1;UtH' M AL JiArt I~ AIHI.;KAt- 1 Ll l: Ho BH~ p. 5/5 

BELLANCA I Alexandria Aircraft LLC Service letter 858 FM Approved 8Aprll04 

INSPECT HERE 

AU. AROUND TUBE 

INBO & OUTED BKT 

AC lEFT & RIGHT 

FWD> 

HS C3ny-Thru Tuba 

Cany-TM.Ilube 

SuPOQtt Braclc•t 

Fl,gure 1: HS Tall Support Inspection 

WITHOUT Se~ Kit 

View Lool<itig outboard Left 

INSPECT HERE 

AU.. AROUND TUB€ 

INBD & OUTBD BKT 

AC LEFT & RJQifT 

HS .Cai'TY-Thru Tube 

carry-Ttvu Tube 

SuDJ)On Srucket 

Figure 2: HS Tail Support Inspection 

WITH Service Kit 

View Looking Outboard Left 

Note: The folloWifig alrcraft had a prodl.ICIIpn version of Ute Service Kit installed during 

Model 

maoofacture: Mode1 17-3QA,$N 7tl-30812:and up, Modei17-31A SN 76-32-164 and up; 

17 -31ATC SN 76-311 25 - ~ese aircraft are Included fn this inspection. 

5. REPAIR 

If any cntclci ~refound as a result of the inspe.ctloo ~l'8SBl'lted nere~in, the cracked parts must be 

n

replaced 

own 

With FAA approv~ zerO-tfme parts before1urther flight, except that the airplane may be 

in accordance w1m FAR 1~7 to a base where the repair can be perfonnsd. 

6. NOTIFY FACTORY- INSPECTION RESULTS 

Cont

Please report your findings to Alexandria ~It LLC with the foUOWinQ lnfonnatlon: 1) OWner 

act Information, 2) Airplane Model and Sel)al Number. 3) Total Tlf!le. 4) were cracks found 

as a result of the SL85A/AD75-20-06 'in5pectj6ns and was the SeJVfce Kif lostaBed, 5) did you flnd 

cta,ck,s. 

cracks as a result of the Inspection described here-in and if so - describe where you found the . 

Page2of2