Repair for Left and Right Sides Similar  Material:.0502024-T3Aluminum 
StructuralRepairs 
Figure801 (Sheet9 of 17) 
EFFECTIVITY: 
040-999 
PAGE10 51-70-00Jan 10/90 

PIPER AIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL

B. FuselageRepairs-PressurizedSection(continued)
FuselageChannel Repair
R-12

TypicalChannelLocation -
Pressure Bulkhead F.S. 57.0

UtilizeExisting Rivet Pattern
Channel

Use 5/8" Spacingfor Additional Fasteners
1.5"

Repairfor Left and RightSidesSimilar Material:.060 2024-T3 Aluminum
StructuralRepairs Figure 801 (Sheet 10 of 17)

EFFECTIVITY: 040-999
51-70-00Jan 10/90

PIPERAIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL

B. FuselageRepairs -Pressurized Section (continued)
Fuselage Skin Repair (Typical) R-13andR-14
Typical Skin RepairApplication
.31 in Minimum EdgeDistance,Typical
9.0"
Material:.0802024-T3 Clad Aluminum °
BevelSides45 X .070

StructuralRepairs Figure 801 (Sheet 11 of 17)
EFFECTIVITY:
040-999

Jan10/9051-70-00

PIPER AIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL

B. Fuselage Repairs -Pressurized Section (continued)
Bulkhead Repair (continued) R-15
Bulkhead
Bulkhead
MS20470-AD4Rivets
F.S.140.0

View A-  A 
EFFECTIVITY: 040-999  Material:.032 2024-T3 Aluminum Structural Repairs Figure 801 (Sheet 12 of 17) 

51-70-00 PAGE13

Jan 10/90

PIPERAIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL

B. FuselageRepairs-PressurizedSection(continued)
LongitudinalBeamRepair R-16
TypicalLocation
PressureBulkhead

F.S.57.0 -Mid Space as Shown
MatchCenterPattern

BeamAssembly 
Repairfor Left and RightSidesSimilar  Material:.0402024-T3Aluminum 
StructuralRepairs 
Figure801 (Sheet13of 17) 
EFFECTIVITY: 
040-999 

Jan10/9051-70-00
PIPER AIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL

B. Fuselage Repairs -Pressurized Section (continued)
Typical Pressure BulkheadChannelRepair R-17
Typical Pressure Bulkhead Channel Location
PressureBulkhead
F.S.57.00
Channel

Repairfor Left and Right Sides Similar  Material:.0402024-T3Aluminum 
StructuralRepairs 
Figure801 (Sheet14of 17) 
EFFECTIVITY: 
040-999  51-70-00  PAGE15Jan 10/90 

PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL

B. Fuselage Repairs -Pressurized Section (continued)
Fuselage Station 332.0 Bulkhead Repair R-18
12 Each MS20470-AD4 --12 Each MS20470-AD4 Rivets Rivets
Existing Pattern  TypicalBulkhead Location F.S. 332.0 
Bulkhead  Pickup Existing Pattern 
-
Existing Pattern  .75" 
ViewA-A 

Repairfor Left and Right Sides Similar  Material: .051 2024-T3 Aluminum 
Structural Repairs 
Figure 801 (Sheet 15 of 17) 
EFFECTIVITY: 
Jan 10/90Jan 10/9051-70-00  040-999 

PIPERAIRCRAFT
PA-42-720 (Advanced Trainer)

MAINTENANCEMANUAL

B. Fuselage Repairs -Pressurized Section (continued)
Bulkhead Repair (continued) R-19 and R-20
Bulkhead
F.S.215.0
3.0'

2.25"
1.3'
Existing Rivet Pattern
.38"
View A A
5 Each MS20470-AD4 Rivets
Material: .040 2024-T3 Aluminum
Structural Repairs
Figure801 (Sheet 16 of 17)

EFFECTIVITY:
040-999
51-70-00 PAGE
Jan 10/90

PIPERAIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL

B. FuselageRepairs-PressurizedSection(continued)
FuselageSkinRepair(Typical)
R-21
-Intercostal Channel
Bulkhead

Note:
StopDrillCracksBeforeAddingDoubler
.38R
MS20470-AD4 Rivets
W.L.10.0
.38
.38 1.0
2.0
Material:.040 2024-T3Aluminum

StructuralRepairs Figure801 (Sheet17of 17)
EFFECTIVITY: 040-999

51-70-00
Jan
10/90
51-70-00
PIPERAIRCRAFT PA-42-720(Advanced Trainer) MAINTENANCEMANUAL 
CHAPTER 52 
LIST OF EFFECTIVE PAGES 
CHAPTER SECTION  PAGE  DATE  CHAPTER SECTION  PAGE  DATE 
　
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