Vibration Symptom and Maintenance Action - In-flight Vibration 
Figure 201 (Sheet 11)
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 05-51-67
 ALL  ú ú 01 Page 215 ú Nov 12/99 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
H52715
A 737-300/400/500MAINTENANCE MANUAL 
PROBLEM  3  ISOLATION PROCEDURE  PROBABLE CAUSE  
 REMEDY  
speed. increases with Vibration nose gear area. from main or takeoff roll Vibration during  Uneven tire wear/ Tire out-of-round  Wheel/Tire Imbalance  Replace affected AMM 32-45-02/401). (AMM 32-45-01/401, tires and wheels  
the ground gear lifts off Vibration when  weights Missing wheel balance  Wheel Imbalance  CMM). weights (Supplier Replace balance  
Vibration during felt in the wing heard and/or Vibration can be approach when takeoff or root area. extended. flaps are  2. Play in the trailing edge aft segment inboard flap rollers Check: 1. Attachment bolts flap carriage on the hinged  of the midflap on the inboard end bearing is located bearing. The mechanism cam roller segment actuation tion of the aft Wear or deteriora- Item 95). (IPC 27-51-19-02, Replace bearing Torque attachment (AMM 27-51-47/401). bolts  
segment.  
interface blade 3. Foreflap/spoiler seal  deterioration Separation or  (AMM 27-61-11/401, Fig. 401). Repair or replace  
drive machanism 4. Inboard aft flap  tion Wear or deteriora- Repair or replace.  
actuator access 5. Leading edge slat panel.  Loose panel  through -65D). (IPC 57-30-00-65 Repair or replace 
Vibration Symptom and Maintenance Action - In-flight Vibration 
Figure 201 (Sheet 12)
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 05-51-67
 ALL  ú ú 01 Page 216 ú Nov 12/99 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
H52719
A 737-300/400/500MAINTENANCE MANUAL 
PROBLEM  3  ISOLATION PROCEDURE  PROBABLE CAUSE  
 REMEDY  
Airplane  Check:  
"buffeting"  1. Body/wing/tail  Condition of the  Repair or replace  
for excessive or  leading edges have a  (SRM 57-41-01).  
large dents/  significant effect  
patches/bulges.  on high speed buffet  
Pay particular  characteristics.  
attention to  Leading edge devices  
leading edge  should be undamaged  
devices.  and free of patches  
or dents.  
2. Wing vortex  Vortex generators  Repair or replace  
generators for  damaged or missing.  (Dispatch Deviations  
damage and proper  Procedures Guide,  
position  Section 3, Item No.  
57-30-6).  
3. Leading edge  Flap/slat fairing.  Adjust flaps and/or  
flaps and slats.  Mismatch of slat  slats  
Pay particular  upper trailing edge  (AMM 27-81-0/401).  
attention to the  has significant  
fair of the slat  effect on airplane  
 
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