# SERVICE BULLETIN

B737

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 1 of 13 Number: B737-53-0011

B737-600/700/800/900/900ER Inspection of IFE Radome


### 1. Planning Information 

### A. Effectivity 1.) Effectivity (Group 1) This service bulletin is applicable to all Boeing 7 37 aircraft with Radome P/N 5063-100-xx installed in accordance with STC ST00284BO (B737-70 0/800/900/900ER).

2.) Effectivity (Group 2) This service bulletin is applicable to all Boeing 7 37 aircraft with Radome P/N 5063-101-xx installed in accordance with STC ST02887AT (B737-60 0/700/800).



### B. Concurrent Requirement None



### C. Reason This service bulletin gives the instructions to ins pect Boeing 737 with STC ST00284BO or ST02887AT aircraft radomes installed for outer ply cracks. If cracks are found the radome is to be replaced before further flights. Manufacturing variation due to lack of dimensional controls can result in the introduction of preload stress on the radome. Preload stress combined with flight or handling stress such as stepping on the radome fair ing assembly, may initiate a crack. The radome manufacturing drawings were revised on Septe mber 13, 2010 to add a control dimension which was incorporated at radome serial number 498( F) and up. “F” designations identify radome units that have a flex-coat paint incorporat ed to alleviate surface paint crazing conditions. The inclusion of the “F” designation does not chang e the base serial number. The base serial number will be used from this point forward in the SB.

This service bulletin is a result of a safety analy sis performed by STC holder and the FAA based on knowledge that the Boeing 737NG (737-600, -700, -800 and -900) aircraft is not certified to account for this type of damage (or energy levels r elated to a comparable bird strike event) CFR 25.631 and findings of inspections accomplished in accordance with the LiveTV Service Bulletin Number B737-53-007. The analysis determined that r adome cracks could possibly propagate, allowing larger pieces to separate from the aircraf t and strike the tail. The full core section of th e radome weighs 10.5 lbs and there is no data availab le to substantiate that a section larger than 8 lbs could not separate.

The Boeing 737NG (737-600, -700, -800 and -900) air craft (TCDS A16WE) are certified to CFR Part 25 Amdt. 25-77 with risk for pieces having wei ght / energy exceeding the requirements of CFR 25.571e(1) for 4 pound bird strikes unless the structure was significantly modified. Boeing document D010A001 does not show the empennage to be modified; therefore these aircraft are not certified to sustain the damage from an impact with an 8 lb. bird. The Boeing 737-600, -700, - 800 and -900 are certified to CFR 25.571 Amendt. 25 -77 and does include discrete source evaluation from impact with a 4-pound bird at Vc (v elocity at cruise) at sea level to 8,000 feet. Therefore impact with the 10.5 lb radome could caus e an unsafe condition. However the severity of the unsafe condition will depend on the size of the released piece, the trajectory and orientation of the radome pieces at impact. The rad ome shape is primarily an oval 44 inches wide and 63 inches long and 5.7 inches high. The greates t damage is expected to be a direct strike to the vertical stabilizer leading edge in an edgewise orientation due to the concentration of the energy in a small area.

# SERVICE BULLETIN

B737

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 2 of 13 Analysis has set the prescribed repeated inspection intervals for identification and replacement of a cracked radome which may coincide with the ICA 10 0 day radome fairing bulb seal inspections.



### D. Description This service bulletin provides instructions for an external visual inspection for cracks of the IFE (In Flight Entertainment) radome. If cracks are found the radome is to be replaced before further flight.



### E. Accomplishment Recommendation 1) The Federal Administration (FAA) will possibly r elease an Airworthiness Directive related to this service bulletin. If released the Airworthine ss Directive will make the compliance task and times given in the service bulletin mandatory. 2) It is recommended that the operator accomplish t he initial inspection within 1250 Flight Hours (FH) from 120 days following the release date of th is service bulletin. This will ensure initial inspection per the SB within 1250 Flight Hours (FH) from the end of the 120 days. 3) It is recommended that the operator initialize a repetitive inspection every 1250 FH thereafter. 4) The operator is to report any crack indications to the STC holder. 5) Currently there is no terminating action. 6) Terminating action is currently under evaluation by the FAA and STC holder.



### F. Regulatory Approval
The FAA proposes to mandate inspections by regulato ry action and issue an Airworthiness Directive.

This Service Bulletin contains no modification info rmation that revises the approved configuration.



### G. Manpower
The manpower estimates given in this Service Bullet in are based on the direct labor cost to do
the work. These estimates assume that the work will be done by experienced personnel and may need to be revised upwards to suit operator’s circu mstances

. The estimated labor to accomplish
this Service Bulletin is:

Phase or Part Technicians Elapsed Time Labor-Hours
Inspection 1 1 1

Radome, replace if required 2 *8 (Based on RTV-108 cure time of 6 hrs.) 4

*If RTV 230A/B is used, elapsed time will be shorte r.

# SERVICE BULLETIN

B737

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### H. Weight and Balance

None



### I. Electrical Load Data
Not Changed



### J. Software Accomplishment Summary
Not Applicable



### K. References

• STC ST00284BO (B737-700/800/900/ER)

• LiveTV IPC LTV-625

• LiveTV AMM LTV-580

• LiveTV Radome Installation Drawing 73SN2100 (B737- 700/800/900/ER) for STC ST00284BO

• Boeing AMM 737-600/700/800/900

• STC ST02887AT (B737-600/700/800)

• LiveTV IPC LTV-610

• LiveTV AMM LTV-565

• LiveTV Radome Installation Drawings for STC ST0288 7AT:

• 67422017 Rev C (B737-600)

• 67432017 Rev K (B737-700)

• 67442017 Rev D (B737-800)

• LiveTV SIL-0059

• AC 20-176

• AAS-NDT-09-001 Non-Destructive Testing Manual for LiveTV Alterations and Repairs



### L. Publications Affected

None



### M. Interchanging and Intermixing Parts

None



### N. Revision History

Revision Reason Date

00 Initial Release 29 March 2013

# SERVICE BULLETIN

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### 2. Material Information



### A. Material – Availability
All parts and materials are provided in accordance with contractual agreements.
No additional parts are required.
Material questions should be directed to the locati on listed below:

STC holder Phone: (1) 407-240-3265
2544 E. Landstreet Rd. Fax : (1) 407-240-8664
Orlando, FL 32824

USA



### B. Industry Support Information
Support information or questions should be directed to the location(s)
listed below:

STC holder Maintenance Technical

Support Phone: (1) 407-812-2538 Fax : (1) 407-812-2526 Email: TechSupport@LiveTV.net

STC holder Certification

Jane Anne Webb
Director, Aircraft Certification Email: janeanne.webb@livetv.net



### C. Consumables Requirements The following consumables may be required:
Mfg. Part Number Nomenclature Quantity Source



### Cor-ban 27L Compound, Antiseize A/R Commercially Available

RTV-108 or RTV-230 A/B Sealant or

Sealant, Rapid Cure A/R Commercially Available

# SERVICE BULLETIN

B737

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### D. LiveTV Supplied Material

Mfg. Part Number Nomenclature Quantity Source

5063-100-V3 (Group 1) Radome 1 per A/C (as required) LiveTV

5063-101-V2 (Group 2)



### E. Operator/Customer Supplied Material

Mfg. Part Number Nomenclature Quantity Source

None



### F. Re-identified Parts

None



### G. Tooling – Availability (1) Standard mechanic tools may be used.
(2) The following special tools are required: 

### Mfg. Part Number Nomenclature Quantity Source

*Torque Wrench, 65-100 inch pounds 1 Commercially Available

Access maintenance stand to reach Crown

area 1 Commercially Available

*May be required.

# SERVICE BULLETIN

B737

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 6 of 13 3. Accomplishment Instructions 3.1 (Group 1) Instructions

A. Genera l

WARNING: Make sure that you obey all the warnings and cauti ons included in the referenced

procedures.

NOTE: Some steps in the accomplishment instructions are identified as Required for Compliance (RC). If this service bulletin is mandated by an airwor thiness directive (AD), the steps identified as RC must be done to comply with the AD . Steps not identified with RC are recommended and may be deviated from, done as part of other action, or done with acceptable methods different from those in SB, if t he RC step can be done and the airplane put back in a serviceable condition.

1) Preparation: a) Ensure aircraft is safe for maintenance, refer t o with Boeing 737-700/800/900 AMM. b) Remove power to the IFE system, refer to LiveTV AMM LTV-580, section 4000. c) Gain access the radome in the crown area.

B. Work Instructions

1) Accomplish a detailed visual inspection (DVI) of radome assembly in areas detailed in Figure 1 and refer to Figure 4 for visual inspection steps. (RC)

NOTE: Figure 2 provides examples of typical cracks foun d at forward and aft locations of the radome exterior.

• If any crack IS found, proceed to Step 2.

• If crack IS NOT found, proceed with Step 3.
2) If any crack is found, remove and replace the IF E Radome before further flight per LiveTV AMM LTV-580, section 4000. (RC)

NOTE: Seal the reveal area between Radome and Fairing w ith RTV-108 which requires 6 hour cure time prior to flight or altern ate Sealant RTV-230A/B which requires 2 hour cure time prior to flight. Refer to figure 3.

3) Restore the aircraft to normal condition, refer to Boeing 737- 700/800/900 AMM and restore power to IFE system, refer to LiveTV AMM LTV-580, section 4000.

C. Reporting Form
1) If cracks are found, complete the “Reporting Fo rm” and attach the completed inspection results to
STC holder Certification Jane Anne Webb via email t o janeanne.webb@livetv.net with subject line heading of: (Service Bulletin Number) and (Air craft Registration Number).

# SERVICE BULLETIN

B737

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 7 of 13 3.2 (Group 2) Instructions

A. Genera l

WARNING: Make sure that you obey all the warnings and cauti ons included in the referenced

procedures.

NOTE: Some steps in the accomplishment instructions are identified as Required for Compliance (RC). If this service bulletin is mandated by an airwor thiness directive (AD), the steps identified as RC must be done to comply with the AD . Steps not identified with RC are recommended and may be deviated from, done as part of other action, or done with acceptable methods different from those in SB, if t he RC step can be done and the airplane put back in a serviceable condition.

1) Preparation a) Ensure aircraft is safe for maintenance, refer t o Boeing 737-600/700/800 AMM. b) Remove power to the IFE system, refer to LiveTV AMM LTV-565, section 4000. c) Gain access the radome in the crown area.

B. Work Instructions 1) Accomplish a detailed visual inspection (DVI) of radome assembly in areas detailed in Figure 1 and refer to Figure 4 for visual inspection steps. (RC)

NOTE: Figure 2 provides examples of typical cracks fou nd at forward and aft locations of the

radome exterior.

• If any crack IS found, proceed to Step 2.

• If crack IS NOT found, proceed with Step 3.
2) If any crack is found, remove and replace the IF E Radome before further flight per LiveTV AMM LTV-565, section 4000. (RC)

NOTE: Seal the reveal area between Radome and Fairing w ith RTV-108 which requires 6 hour cure time prior to flight or altern ate Sealant RTV-230A/B which requires 2 hour cure time prior to flight. Refer to figure 3.

3) Restore the aircraft to normal condition, refe r to Boeing 737-600/700/800 AMM and restore power to the IFE system, refer to LiveTV AMM LTV-565, sec tion 4000.

C. Reporting Form
1) If cracks are found, complete the “Reporting Form” and attach the comple ted inspection results to
STC holder Certification Jane Anne Webb via email t o janeanne.webb@livetv.net with subject line heading of: (Service Bulletin Number) and (Air craft Registration Number).

.

# SERVICE BULLETIN

B737

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B

B (See Figure 3) BRIDGE FITTINGS AREA

TYP.

ABOVE SCREW HOLES 6.00 INCHES

INSPECTION AREA

TYP. BRIDGE FITTING LOCATION 

# FWD

VIEW LOOKING DOWN

Radome External Visual Inspection Areas

FIGURE 1

(Radome 5063-100 is shown as example, 5063-101 has more than one lightning diverter strip )

# SERVICE BULLETIN

B737

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 9 of 13 Figure 2

# SERVICE BULLETIN

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 10 of 13 Radome Fairing Reveal

Figure 3

# SERVICE BULLETIN

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 11 of 13 Radome Visual Inspection Procedures



### 1) Stands, ladders or platforms may be required to gai n proximity to the area being inspected. 2) Inspection area should have clear access to the inspection surface. 3) Inspection surface shall be clean, dry and free of oil, grease, sealant, corrosion, chemical residues or any coating, which could affect the acc uracy of the inspection, except for paint, primer, clad and anodize coatings . Note: Mechanical/chemical cleaning or corrosion rem oval is not authorized in this procedure and must have previous approval by the airworthiness authori ty to whom the operator is responsible. NOTE: Previous cracks noted were in excess of 1” in length, could be seen without the need of magnification and were visible through the paint la yer from a typical distance of 18”. 4) This level of inspection is made under normally ava ilable lighting conditions such as daylight or hangar lighting supplemented with a direct source o f good lighting at an intensity deemed appropriate by the person performing the inspection such as a flashlight or drop light directed at an angle to the surface being inspected as shown in below view. 5) All visual inspections should be performed as close as possible to the part being inspected and no greater than 18 inches from the surface of the part

.

Radome Visual Inspection Procedures

Figure 4

# SERVICE BULLETIN

B737

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## SB REPORTING FORM

S ERVICE 

## B ULLETIN 

## & R EVISION B737-53-0011 Rev 00 

## S ERVICE 

## B ULLETIN 

## T ITLE B737

- 600/ 700/800/9 00 /ER Inspection of IFE Radome



## P LEASE PROVIDE THE FOLLOWING INFORMATION 

## : S ERVICE OR 

## W ORK 

## O RDER 

## N UMBER



## D ATE OF 

## A CCOMPLISHMENT



## L OCATION OF 

## A CCOMPLISHMENT



## A IRCRAFT 

## R EGISTRATION



## A CCOMPLISHING 

## T ECHNICIAN 

## N AME



## R ADOME 

## S ERIAL 

## N UMBER 

## : R EQUIRED IF RADOME IS REMOVED 

## I F 

## A NY 

## R ADOME 

## D EFECTS ARE 

## O BSERVED



## . P ROVIDE DETAILS


## , e.g. location, crack length etc.

RECORD ANY ADDITIONAL INFORMATION BELOW 

## :

I F C RACKS ARE FOUND E- MAIL COMPLETED F ORMS TO : D EPARTMENT N AME Certification

– Jane Anne Webb E- MAIL janeanne.webb@livetv.net

# SERVICE BULLETIN

B737

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- 0011 29 Mar, 2013 Rev.00 © LiveTV All rights reserved. Page 13 of 13 

### APPROVALS

FOR APPROVAL SIGNATURES SEE THE SIGNATURE MANIFEST AT THE END OF THIS

DOCUMENT IN THE MASTER CONTROL SYSTEM.