# Embraer Service Bulletin 505-25-0020

Copy: No revision named ("SB505-25-0020"), 16 pages: PDF https://openairdocs.org/files/sha256/e9/5e/e95efd7a0878a641dfccd2388f6135d18ae96b929af978475fbfd92e9c9736a3; text https://openairdocs.org/service-documents/embraer/sb-505-25-0020/file/e95efd7a0878.md. Rights: © Embraer S.A. Filed by the FAA in regulations.gov docket FAA-2016-8160; AD 2016-22-02 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Embraer](https://openairdocs.org/service-documents/embraer.md)
- Type: Service bulletin (Service Bulletin)
- Number: 505-25-0020
- Page: https://openairdocs.org/service-documents/embraer/sb-505-25-0020

## ADs that cite it (1) (OpenAirDocs)

Newest first, with the revision each names, as OpenAirDocs read it from the AD's text.

- [AD 2016-22-02](https://openairdocs.org/ad/2016-22-02.md), effective Dec 1, 2016: No revision named

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/embraer/sb-505-25-0020/proposed.md).

## Text (16 pages)

Rights: © Embraer S.A. Filed by the FAA in regulations.gov docket FAA-2016-8160; AD 2016-22-02 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

EQUIPMENT/FURNISHINGS - SEATS INSTALLATION FITTINGS INSPECTION
In connection with the use of this document, Embraer does not provide any express or implied
warranties and expressly disclaims any warranty of merchantability or fitness for a particular purpose.
1. PLANNING INFORMATION
A. SB EFFECTIVITY
Aircraft affected:
MODEL SN
EMB-505 ’Phenom 300’
50500004 thru 50500215, 50500217 thru 50500245,
50500247 thru 50500255, 50500257 thru 50500259,
50500261 thru 50500263, 50500265, and 50500267,
equipped with the affected component.
Affected component:
Passenger cabin seat Part Numbers:
Part Number Seat Model
403174-1 thru -8 PHENOM FULL FUNCTION SINGLE SEAT MODEL 4048
403174-9P2FZ PHENOM FULL FUNCTION SEAT MODEL 4048
403174-10P2FZ PHENOM FULL FUNCTION SEAT MODEL 4048
403174-11P2FZ PHENOM FULL FUNCTION SEAT MODEL 4048
403174-12P2FZ PHENOM FULL FUNCTION SEAT MODEL 4048
403174-17 PHENOM FULL FUNCTION SEAT MODEL 4048
403174-17A PHENOM FULL FUNCTION SEAT MODEL 4048
403174-18 PHENOM FULL FUNCTION SEAT MODEL 4048
403174-18A PHENOM FULL FUNCTION SEAT MODEL 4048
403174-19 PHENOM FULL FUNCTION SEAT MODEL 4048
403174-19A PHENOM FULL FUNCTION SEAT MODEL 4048
403174-20 PHENOM FULL FUNCTION SEAT MODEL 4048
403174-20A PHENOM FULL FUNCTION SEAT MODEL 4048
403174-25 ENHANCED PREMIUM SEAT MODEL 4048
403174-26 ENHANCED PREMIUM SEAT MODEL 4048
403174-27 ENHANCED PREMIUM SEAT MODEL 4048
403174-28 ENHANCED PREMIUM SEAT MODEL 4048
403174-29 ENHANCED PREMIUM SEAT MODEL 4048
403174-30 ENHANCED PREMIUM SEAT MODEL 4048
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 1 of 15
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 2

Part Number Seat Model
403174-31 ENHANCED PREMIUM SEAT MODEL 4048
403174-32 ENHANCED PREMIUM SEAT MODEL 4048
403174-37 ENHANCED PREMIUM CUSTOM SEAT MODEL 4048
403174-38 ENHANCED PREMIUM CUSTOM SEAT MODEL 4048
403174-39 ENHANCED PREMIUM CUSTOM SEAT MODEL 4048
403174-40 ENHANCED PREMIUM CUSTOM SEAT MODEL 4048
403185-1 ENHANCED FLIGHT OPTIONS SEAT COGNAC MODEL 4048
403185-2 ENHANCED FLIGHT OPTIONS SEAT COGNAC MODEL 4048
403185-3 ENHANCED FLIGHT OPTIONS SEAT COGNAC MODEL 4048
403185-4 ENHANCED FLIGHT OPTIONS SEAT COGNAC MODEL 4048
403185-5 ENHANCED FLIGHT OPTIONS SEAT ARMANI MODEL 4048
403185-6 ENHANCED FLIGHT OPTIONS SEAT ARMANI MODEL 4048
403185-7 ENHANCED FLIGHT OPTIONS SEAT ARMANI MODEL 4048
403185-8 ENHANCED FLIGHT OPTIONS SEAT ARMANI MODEL 4048
NOTE: This effectivity list includes the aircraft originally equipped with the affected
components. Since these components are “Line Replaceable Units” (LRUs),
it may be necessary to refer to the fleet maintenance control record and
verify whether a unit has been replaced with another one during routine
maintenance.
In-production effectivity:
The subject presented in this bulletin does not affect any in-production aircraft.
B. CONCURRENT REQUIREMENTS
None.
C. REASON
(1) HISTORY
During production, EMBRAER found that there is a possibility of the passenger seat
attachment fitting positions being mixed up on certain aircraft.
There are two different part numbers for the seat attachment fittings because they
are made of steel or aluminum.
The material of the seat attachment fittings is relevant for the proper behavior of the
seats in case of a hard landing event.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
SB No.: 505-25-0020
PAGE: 2
DATE: 08/Dec/2015
REVISION No.:
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 3

(2) OBJECTIVE
This service bulletin gives instructions to inspect the passenger seat attachment
fittings and correct their positions according to the seats supplier Component
Maintenance Manual (CMM), if necessary.
(3) EXPECTED BENEFITS
The inspection, and correction if applicable, will make sure that all passenger seats
installed in the aircraft are compliant with the Manufacturer’s Technical Standard
Order (TSO) avoiding seat damage in case of a hard landing.
(4) REVISION HISTORY
None.
D. DESCRIPTION
(1) Part I - Floor fittings inspection.
(a) To do the inspection described in this service bulletin, it is necessary to gain
access to each seat attachment fitting on the passenger cabin floor area.
(2) Part II - Floor fitting repositioning.
(a) To do the repositioning procedure described in this SB, it is necessary to remove
each seat separately on the passenger cabin floor area.
E. COMPLIANCE
EMBRAER recommends that this service bulletin be accomplished within the next 30
Month(s) of operation.
F. APPROVAL
The technical aspects of this Service Bulletin are approved by: ANAC - Agência Nacional
de Aviação Civil.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 3
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 4

G. ESTIMATED MANPOWER
This estimate is for direct labor only, performed by experienced personnel, and does not
include the time to plan, prepare, or inspect the work.
It is assumed that all the tools, parts, and other means are promptly available when
necessary.
This estimate does not include the sealant, paint, or adhesive curing time.
– Access opening: 1.0 man-hour.
– Inspection: 2.0 man-hours.
– Access closure: 1.0 man-hour.
NOTE: These estimates do not include the time necessary to correct the fitting
positions, if necessary.
(2) Part II - Floor fitting repositioning.
– Access opening: None.
– Repositioning: 1.0 man-hour.
– Access closure: None.
NOTE: This estimate covers the repositioning procedure for one seat. If the
repositioning of more than one seat is necessary, add 2 hours for each seat.
H. WEIGHT AND BALANCE
None.
I. ELECTRICAL LOAD DATA
Not changed.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
SB No.: 505-25-0020
PAGE: 4
DATE: 08/Dec/2015
REVISION No.:
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 5

J. SOFTWARE ACCOMPLISHMENT SUMMARY
None.
K. REFERENCES
AIPC 505/( ) Aircraft Illustrated Parts Catalog - 25-21-01 -EQUIPMENT/FURNISHINGS.
AMM 505/( ) Aircraft Maintenance Manual PART II - 25-21-01 -EQUIPMENT/FURNISHINGS.
AMM 505/( ) Aircraft Maintenance Manual PART II - 26-24-01 - FIRE PROTEC-TION.
AMM 505/( ) Aircraft Maintenance Manual PART II - 44-12-03 - CABINSYSTEMS.
L. PUBLICATIONS AFFECTED
None.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 5
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 6

2. MATERIAL INFORMATION
A. MATERIAL - PRICE AND AVAILABILITY
None.
B. INDUSTRY SUPPORT INFORMATION
(1) WARRANTY COVERAGE
(a) Part I - Floor fittings inspection.
1 Parts
None.
2 Labor
EMBRAER will compensate 4.0 man-hours for the SB incorporation if it is
performed in an EMBRAER-authorized service center.
3 Expiration
None.
C. MATERIAL NECESSARY FOR EACH AIRCRAFT
When applicable, the use of alternative or similar parts in place of the ones specified in
the kits is allowable, provided that these alternative or similar parts are approved by
EMBRAER as indicated in the related EMBRAER Technical Publications or through a
formal EMBRAER communication channel.
The expendable or consumable parts presented in the AMM Tasks referred to in this
bulletin, which are necessary for its accomplishment, should be procured from the
operator’s inventories or ordered as spares.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
SB No.: 505-25-0020
PAGE: 6
DATE: 08/Dec/2015
REVISION No.:
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 7

(1) TOP KITS AND KITS
None.
(2) MATERIAL TO BE PROCURED
(a) Parts
The parts below should be ordered as spares from EMBRAER.
NEW PN DESCRIPTION OLD PN QTY DISP/Notes
– Floor Fitting – Alumi-
num 261006-1 A/R 6
– Floor Fitting – Steel 261006-3 A/R 6
DISPOSITION: 6 = Apply as required
NOTE: It is not necessary to order parts in advance. Parts should only be
ordered if during the inspection, different quantities of aluminum and
steel fittings are found.
D. MATERIAL NECESSARY FOR EACH SPARE
None.
E. REIDENTIFIED PARTS
None.
F. TOOLING - PRICE AND AVAILABILITY
A commercially available, 8 mm (5/16 in.) diameter magnet is required to do the
inspection described in this service bulletin.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 7
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 8

NOTE: The magnet size reference is correspondent to the area to be inspected. If
you use a bigger magnet, the efficiency of the inspection can be compro-
mised.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
SB No.: 505-25-0020
PAGE: 8
DATE: 08/Dec/2015
REVISION No.:
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 9

3. ACCOMPLISHMENT INSTRUCTIONS
The steps below outline the general accomplishment instructions.
A. Part I - Floor fittings inspection.
(1) Remove these components, if applicable to the aircraft configuration.
(a) Portable fire extinguisher. Refer to AMM MPP 26-24-01/400 - PORTABLE FIRE
EXTINGUISHER - REMOVAL/INSTALLATION.
(b) Subwoofer and subwoofer housing. Refer to AMM MPP 44-12-03/400 -
SUBWOOFER - REMOVAL/INSTALLATION.
(2) Gently pull the seat close-out panel up (front and back) and remove it. Refer to AIPC
25-21-01 - PASSENGER SEAT.
(3) Remove the seat lower shroud. Refer to Figure 1 - SEATS - WORK AREA
ACCESS/CLOSURE.
(4) Do the inspection as described in Figure 2 - SEAT INSTALLATION FITTINGS
INSPECTION. If the fittings are not installed in the correct position reposition the
floor fittings of the affected seat(s) according to Part II.
(5) Install the seat lower shroud. Refer to Figure 1 - SEATS - WORK AREA
ACCESS/CLOSURE.
(6) Install the seat close-out panel.
(7) Install these components, if applicable, to the aircraft configuration:
(a) Portable fire extinguisher. Refer to AMM MPP 26-24-01/400 - PORTABLE FIRE
EXTINGUISHER - REMOVAL/INSTALLATION.
(b) Subwoofer and subwoofer housing. Refer to AMM MPP 44-12-03/400 -
SUBWOOFER - REMOVAL/INSTALLATION.
(8) Fill out the ″Service Bulletin Implementation and Evaluation ″ form and click on
″Submit by Email″ button. To find the form, log in to the FlyEmbraer portal
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 9
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 10

(http://www.flyembraer.com) and go to: ″Technical Publication > Technical Data >
Service Bulletin > Front Matter > SB505 - SERVICE BULLETIN IMPLEMENTATION
AND EVALUATION FORM″.
You can also fill out the attached form and send it by mail or e-mail to the addresses
given in this form.
B. Part II - Floor fitting repositioning.
(1) Do as follows to reposition the floor fittings:
NOTE: Do one seat at a time to avoid mixing the seat positions.
(a) Remove the affected seat ( AMM MPP 25-21-01/400 - PASSENGER SEAT -
REMOVAL/INSTALLATION).
(b) Remove the bolt, washers and nut that attach the affected floor fitting to the seat
structure. Refer to Figure 3 - SEAT FITTINGS REPOSITIONING.
(c) Remove the affected floor fitting and install the correct floor fitting. Refer to
Figure 3 - SEAT FITTINGS REPOSITIONING.
(d) Install and tighten the bolt, washers and nut to attach the correct floor fitting to
the seat structure. Refer to Figure 3 - SEAT FITTINGS REPOSITIONING.
(e) Install the affected seat ( AMM MPP 25-21-01/400 - PASSENGER SEAT -
REMOVAL/INSTALLATION).
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
SB No.: 505-25-0020
PAGE: 10
DATE: 08/Dec/2015
REVISION No.:
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 11

A
ZONES
231
232
B
B
B
B
TYPICAL
B
PASSENGER
SEAT (REF.)
FRONT CLOSE−OUT PANEL
(REMOVE AND RETAIN)
(REINSTALL)
BACK CLOSE−OUT PANEL
(REMOVE AND RETAIN)
(REINSTALL)
SCREW
(4 POSITIONS)
(REMOVE AND RETAIN)
(REINSTALL)
SHROUD
(2 POSITIONS)
(REMOVE AND RETAIN)
(REINSTALL)
TYPICAL
A
EM500ENSB250679A.DGN
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 11
FIGURE 1 - SEATS - WORK AREA ACCESS/CLOSURE
(SHEET 01 OF 01)
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 12

1. Inspect every passenger seat in the cabin. Inspect each of the four fittings of each seat
as follows:
(a) Use the seat position control handle to move the seat and have a clear view of the
fittings.
(b) Use a flashlight to locate the correct area of each fitting and approach the magnet
to it. The aluminum fitting does not attract the magnet, as the steel fitting does.
NOTE: Looking into the flight direction, the correct fitting positions are:
1) Aluminum fittings are installed on the forward attachment points of
each seat.
2) Steel fittings are installed on the aft attachment points of each seat.
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
SB No.: 505-25-0020
PAGE: 12
DATE: 08/Dec/2015
REVISION No.:
FIGURE 2 - SEAT INSTALLATION FITTINGS INSPECTION
(SHEET 01 OF 03)
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 13

A
ZONES
231
232
C
PASSENGER
SEAT (REF.)
PASSENGER
SEAT (REF.)
TYPICAL
A
C
STEEL FITTINGS
PN 261006−3
(INSPECT)
ALUMINUM FITTINGS
PN 261006−1
(INSPECT)
STEEL FITTINGS
PN 261006−3
(INSPECT)
ALUMINUM FITTINGS
PN 261006−1
(INSPECT) TYPICAL
B
B
EM500ENSB250680A.DGN
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 13
FIGURE 2 - SEAT INSTALLATION FITTINGS INSPECTION
(SHEET 02 OF 03)
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 14

TYPICAL
C
PASSENGER
SEAT (REF.)
D
TYPICAL
D
SEAT FOOT
(REF.)
FLOOR FITTING
(INSPECT)
MAGNET
(REF.)
FLOOR CARPET
(REF.)
EM500ENSB250681A.DGN01 APPROACH THE MAGNET TO THE FITTINGS, THE ALUMINUM FITTING DOES NOT ATTRACT THE MAGNET, AS THE STEEL FITTING DOES.
01
01
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
SB No.: 505-25-0020
PAGE: 14
DATE: 08/Dec/2015
REVISION No.:
FIGURE 2 - SEAT INSTALLATION FITTINGS INSPECTION
(SHEET 03 OF 03)
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 15

EM500ENSB250695A.DGN
TYPICAL
A
LEG FITTING
(REF.)
BOLT
(REF.)
WASHER
(2 POSITIONS)
(REF.)
SEAT STRUCTURE
(REF.)
FLOOR FITTING
(REF.)
NUT
(REF.)
PASSENGER
SEAT (REF.)
A
TM
ÀREA DE NÃO INTERFERÊNCIA
SERVICE BULLETIN
DATE: 08/Dec/2015
REVISION No.:
SB No.: 505-25-0020
PAGE: 15
FIGURE 3 - SEAT FITTINGS REPOSITIONING
(SHEET 01 OF 01)
Copyright © 2015 by Embraer S.A. All rights reserved.

### Page 16

SERVICE BULLETIN IMPLEMENTATION
AND EVALUATION FORM
The purpose of this form is to collect data that will be used to improve the quality of our Service Bulletins and Reliability
Program.
EMBRAER - EMPRESA BRASILEIRA DE AERONÁUTICA S.A.
PHENOM MAINTENANCE SUPPORT
AV. BRIGADEIRO FARIA LIMA, 2170
SÃO JOSÉ DOS CAMPOS - SP - 12227-901 - PO Box: 36/2
BRASIL
Fax: ++ 55 12 3927-2619
e-mail: phenom.reliability@embraer.com.br
S.B. Title: S.B.: (Number / Rev.)
Operator:
SB Implementation Report
Aircraft Serial Number or Registration Number: Incorporation Date:
Aircraft Flight Hours: Aircraft Landings:
POST-ACCOMPLISHMENT EVALUATION:(Check applicable squares below)
ESTIMATED MANPOWER: [ ] OK [ ] NOT OK (Explain Below)
MATERIAL & KITS: [ ] OK [ ] NOT OK (Explain Below)
ACCOMPLISHMENT INSTRUCTIONS: [ ] OK [ ] NOT OK (Explain Below)
FIGURES: [ ] OK [ ] NOT OK (Explain Below)
SB GENERAL EVALUATION: [ ] OK [ ] NOT OK (Explain Below)
COMMENTS: (Bulletin quality/ Difficulties found at the time of incorporation/ Suggested improvements/ Other)
Organization: Fax: Phone:
E-mail:
Address: Prepared by:(Name/Title) Date:
Copyright © 2015 by Embraer S.A. All rights reserved.

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