INTERIORS

PHOENIX, ARIZONA 85040

ALERT SERVICE BULLETIN

ATA SYSTEM: 25

4A4030-25A379

Page 1 of 38

Orig. - Aug 10/09

Subject: Equipment/Furnishings - Evacuation Systems -

TRANSMITTAL OF TECHNICAL DATA (EAR): 

THESE COMMODITIES, TECHNOLOGY OR SOFTWARE ARE CONTROLLED BY THE U.S. EXPORT ADMINISTRATION REGULATIONS

(EAR). DIVERSION CONTRARY TO U.S. LAW IS PROHIBITED. 

LICENSE EXCEPTION: NLR 

ECCN: 9E991

1. Planning Information

A. Effectivity

(1) Equipment - This Service Bulletin affects Embraer 170 and 175 forward door emergency 

evacuation slides manufactured by Goodrich Corporation. The affected units are listed in 

Table 1.

Table 1. Unit Effectivity

(2) Action - Modify affected slides to prevent door stall due to the slide pack lacing not completely 

opening and to prevent excessive slide tilt during slide deployments, and inspect the aspirator 

for damage due to excessive force applied during the slide packing process.

B. Concurrent Requirements

Goodrich Service Bulletin 4A4011/4A4030-25-350 affects P/N 4A4030-2 slides and must be 

accomplished prior to or concurrently with this Service Bulletin (No. 4A4030-25A379). 

Nomenclature Evacuation System P/N Affected Unit S/N

Slide, Fwd Door, LH/RH 4A4030-2 and -4 EB0001, EB0002, EB0003, 

EB0005, and ED0001 thru 

ED1299

Modify Slide to Prevent Door Stall and Excessive 

Slide Tilt
Goodrich

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C. Reason

(1) Description

(a) During two separate scheduled sampling tests, P/N 4A4030-4 slides were involved in door 

stall incidents. An investigation determined that the slide pack lacing did not open 

completely, even though the girt was under tension from the door booster.

(b) Goodrich has received two reports from operators that Embraer 170 series forward door 

slides deployed with excessive tilt during scheduled slide deployment tests. 

(c) Goodrich received a report from an operator that during a scheduled slide deployment test, 

an Embraer 170 series forward door slide deployed completely but then lost air pressure 

due to a damaged aspirator.

(2) Scope of Action 

(a) This Service Bulletin provides a complete and total measure for the door stall, slide tilt, and 

aspirator subjects noted above.

(b) This Service Bulletin 4A4030-25A379 supersedes the action of Goodrich Service Bulletin 

4A4030-25A392.

(c) The units listed in Table 2, below, incorporate these modifications at the time of 

manufacture, and are not affected by this Service Bulletin.

D. Description

This Service Bulletin specifies the following actions:

(1) Inspect the aspirator body for damage

(2) Remove and discard the bungee cord

(3) Modify the packboard soft covers

(4) Disassemble the charged cylinder assembly, reduce the regulator output pressure, and 

reassemble the charged cylinder assembly

(5) Modify the girt

(6) Install a new bottom flap and speed lacing on the packboard

(7) Install a new pack release pin and lanyard on the girt sleeve

(8) Repack the slide and install a lacing assist strap

Table 2. Modification Effectivity

Nomenclature Evacuation System P/N S/N Effectivity

Slide, Fwd Door, LH/RH 4A4030-5 and Subsequent ED1300 and Subsequent
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E. Compliance Recommendation

(1) For slides on which 13 or more months have elapsed from the slide date of manufacture (DOM)

or from the date of last repack (whichever date is newer), perform this Service Bulletin within 6 

months from the release of this Service Bulletin. 

(2) For slides on which 12 months or less have elapsed from the slide DOM or from the date of last 

repack (whichever date is newer), perform this Service Bulletin not later than when the slide 

reaches 18 months from the slide’s DOM or last repack date.

F. Approval

This Service Bulletin has been reviewed by the Federal Aviation Administration (FAA) and the repairs 

and modifications described herein comply with the applicable Federal Aviation Regulations (FAR's) 

and are FAA approved.

G. Manpower

(1) When performed as a continued time maintenance activity, Goodrich estimates that 12 manhours are required to accomplish this Service Bulletin.

(2) When performed in conjunction with an overhaul, Goodrich estimates that 3 man-hours in 

addition to that normally used for slide overhaul are required to accomplish this Service Bulletin.

H. Weight and Balance

The accomplishment of this Service bulletin will increase the total weight of the unit by approximately 

0.7 lbs (.32 Kg).

I. Electrical Load Data

Not affected

J. Reference

The following Goodrich publications were used in the preparation of this Service Bulletin. 

Maintenance personnel should refer to these documents when performing these actions.
Goodrich

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K. Publications Affected

CMM 25-60-38 and CMM 25-60-39 will require revision as a result of this Service Bulletin.

2. Material Information

A. Material – Price and Availability

(1) Modification Parts – The parts required to accomplish this Service Bulletin are available in 

modification kits, P/N 490402-1 and P/N 490402-3. Modification kit P/N 490402-1 is designed to 

be used to modify a unit for continued time in service. Modification kit P/N 490402-3 is designed 

to modify the unit in conjunction with a unit overhaul. To accomplish the overhaul, a packing kit 

P/N 490260-7 is required (one per slide) and must be purchased separately. Modification kits 

and packing kits are available from Goodrich Interiors, Evacuation Systems, Phoenix, Arizona 

(VOACH4). Table 4, below, provides applicability and usage information for the modification kits. 

Table 5, below, provides the parts breakdown for the modification kits. Lead time for the 

modification kits is 30 days.

NOTE: Orders should be addressed to

Goodrich Corporation

3414 S. Fifth St.

Phoenix, AZ 85040-1169 USA

Attn: Customer Service

Tel: 602-243-2200

Fax: 602-243-2300 

Table 3. Reference Publications

Document Description Application

25-60-38 Component Maintenance Manual (CMM) Slide P/N’s 4A4011 and 4A4030 Series

25-60-39 CMM Charged Cylinder Assembly 

P/N 4A4089 Series

25-60-40 CMM Aspirator P/N 5A3265-13

SB 4A4011/4A4030-

25-350

Goodrich Service Bulletin Slide P/N’s 4A4011-2 and 4A4030-2

501761 Packing Instructions Slide P/N 4A4030-5

SNL 25-191 Service Newsletter Slide P/N’s 104003, 104005, 4A4011, 

and 4A4030 series
Goodrich

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(2) Aspirator Repair Parts – On some slides the aspirator may need to be repaired. Repair parts are 

not included in the modification kits (P/N 490402-1 and -3) or in the packing kit (P/N 490260-7) 

because only a minority of slides will require aspirator repair (refer to Paragraph 3.D, and 3.F. 

below). Therefore, procure the aspirator and seal ring kit (P/N 490255-1), aspirator inlet fitting 

(P/N 3A3910-1), the closure assist spring (P/N 3A3733-1), or any other repair parts as needed.

(3) Other Materials - Normal evacuation slide maintenance materials are required. Refer to the 

applicable Goodrich Component Maintenance Manuals and Packing Instructions (reference 

paragraph 1.J and Table 3, above) for this information.

Table 4. Modification Kit Data

Kit P/N QTY 

PER UNIT

PRICE NOMENCLATURE INSTRUCTION/DISPOSITION

490402-1 1 * Kit Modification, 

SB 25-379

Use to modify P/N 4A4030 series slides as a 

continued time action

490402-3 1 * Kit Modification, 

SB 25-379

Use to modify P/N 4A4030 series slides in 

conjunction with an overhaul**

*Refer to Industry Support Information, paragraph B, below.

** Packing Kit (P/N 490260-7) is also required to accomplish the overhaul and must be purchased

 separately.
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 *P/N 490402-1 is designed to be used to modify a unit as a continued time action.

**P/N 490402-3 is designed to modify the unit in conjunction with a unit overhaul. To accomplish the

 overhaul a packing kit (P/N 490260-7) is required (one per slide) and must be purchased separately.

Table 5. Modification Kits Parts Breakdown 

P/N Nomenclature QTY

490402-1

QTY

490402-2

QTY

490402-3

490402-1 Kit, Modification, SB 25-379* X

490402-2 Kit, Modification, Regulator 1 X 1

490402-3 Kit, Modification, SB 25-379** X

240443-1 Patch, Soft Cover 2 2

240470-2 Patch, Girt Sleeve Flap 1 1

240477-1 Patch, Girt 1 1

240477-4 Patch, Girt 1 1

4A4101-33 Soft Cover Flap Assembly, 

Fwd

1

240428-8 Strap, Lacing Assist 1 1

240151-5 Cord, Replaceable 1

240180-10 Restraint, Safety Tie (black) 5

240180-12 Restraint, Safety Tie (green) 2

240180-14 Restraint, Safety Tie (blue) 2

240180-15 Restraint, Safety Tie (red) 1

4A3613-280 Restraint Assy, Shear Pin,

280 Lbs.

1

300698-1 Pin, Parachute 1 1

240473-1 Patch Assembly, Lanyard 1 1

490402-17 Bar Code “4A4030-5” 1 1

510236-2 Decal 1

1A2313-7 O-Ring 1

1A2419 Seal Rod 1

680146-916 O-Ring 1
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B. Industry Support Information

(1) Modification kits required to perform this Service Bulletin will be supplied free of charge for 

orders placed before March 31, 2011. To be eligible for free of charge kits, the purchaser must 

reference this Service Bulletin and provide the part number and serial number of the units for 

which those kits are being ordered. The labor allowance for this Service Bulletin is 12.0 hours 

per unit when the modification is performed as a continued time action, and 3.0 hours per unit 

when the modification is performed in conjunction with an overhaul.

(2) Standard warranty terms are applicable to aspirator repairs or other repairs made as part of this 

Service Bulletin accomplishment.

C. Tooling

(1) Cable or heavy wire cutter. This item is commercially available.

(2) Sheet metal snips. This item is commercially available.

(3) Fiberscope - Portable, flexible fiberscope (borescope) with a light and angled mirror.

(4) Heater Box* - Goodrich P/N 540743-1. Price is $1200.00.

(5) Girt Folding Fixture* - Goodrich P/N 540633-1. Price is $1041.00

(6) Other Tools – Normal evacuation slide maintenance tooling is required. Refer to the applicable 

Goodrich Component Maintenance Manuals and Packing Instructions (reference paragraph 1.J 

and Table 3, above) for this information.

*Suggested Source of Supply:

NOTE: Goodrich Corporation

3414 S. Fifth St.

Phoenix, AZ 85040-1169 USA

Attn: Customer Service

Tel: 602-243-2200

Fax: 602-243-2300 
Goodrich

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3. Accomplishment Instructions

WARNING: FOLLOW ALL WARNING AND CAUTION NOTES AND PROCEDURES IN THE 

APPLICABLE GOODRICH MAINTENANCE DOCUMENTS (REFERENCE PARAGRAPH 

1.J AND TABLE 3, ABOVE) WHEN PERFORMING THE FOLLOWING WORK 

PROCEDURES.

NOTE: The following instructions assume that the unit has been removed from the aircraft and has 

been moved to the workshop.

NOTE: For P/N 4A4030-2 slides, Service Bulletin 4A4011/4A4030-25-350 must be accomplished 

concurrently with this Service Bulletin (reference Concurrent Requirements, paragraph 1.B, 

above). Refer to Service Bulletin 4A4011/4A4030-25-350 as noted in the following 

Accomplishment Instructions.

A. Unpack the evacuation slide in accordance with the DISASSEMBLY section of Goodrich Component 

Maintenance Manual (CMM) 25-60-38.

B. (P/N 4A4030-2 slides only) Refer to Service Bulletin 4A4011/4A4030-25-350, Paragraph 2, 

Accomplishment Instructions, and perform steps 2.C through 2.G of that Service Bulletin. 

However, skip the girt sleeve modification in steps 2.F(2) through 2.F(7) of Service Bulletin 

4A4011/4A4030-25-350.

C. Inspect the Girt Installation

(1) Use shop air and inflate the slide to 2.25 to 2.75 psi (15.51 to 18.96 kPa).

(2) Use a tape measure and pencil and mark lines on the head end cross tube at 2.25 inches (5.72 

cm) and 3.25 inches (8.26 cm) above the seam, on each side of the girt as shown in Figure 1, 

Inset A, below.
Goodrich

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Figure 1. 

Verify Girt Installation Location

(3) Confirm the girt installation location is correct by verifying that the girt grommet strip is between 

the two pencil lines. See Figure 1, Inset A, above for a correct installation location and Figure 2, 

below, for an incorrect installation location.

GR4A4030SB25A379001

3.25 INCHES

(8.26 cm)

2.25 INCHES

(5.72 cm)

PENCIL

LINES

GIRT GROMMET STRIP

(Between the Two Pencil Lines)

INSET A

GIRT

GIRT GROMMET STRIP

TUBE SEAM

HEAD END

CROSS TUBE

TUBE SEAM

PENCIL LINES 

(4 Places)
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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

NOTE: If the girt grommet strip is outside of the pencil lines below (as shown in Figure 2) or 

above (not shown), the girt installation location is incorrect.

Figure 2. 

Incorrect Girt Installation Location

(4) If the girt is installation location is incorrect, skip to paragraph 3.D.

(5) Confirm the girt is installed tightly against the head end cross tube as follows.

(a) Visually verify that a gap does not exist between the girt and the head end cross tube in the 

area of the pencil marks as shown in Figure 3.

(b) If a gap is found between the girt and the cross tube as shown in Figure 4, skip to 

paragraph 3.D.

GE4A4030SB25A379002

3.25 INCHES

(8.26 cm)

2.25 INCHES

(5.72 cm)

PENCIL

LINES

GIRT GROMMET STRIP

(Below the Two Pencil Lines)

TUBE SEAM

INCORRECT

GIRT INSTALLATION
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Figure 3. 

Correct Girt Installation Tightness

Figure 4. 

Incorrect Girt Installation Tightness (Too Loose)

PENCIL

LINES

TUBE SEAM

GIRT

HEAD END TUBE

GIRT GROMMET STRIP

GR4A4030SB25A379003

GIRT IS TAUT AROUND THE 

TUBE. THERE IS NO GAP

BEWEEN THE TUBE AND 

THE GIRT.

PROPERLY INSTALLED GIRT

TUBE SEAM

GIRT HEAD END TUBE

GIRT GROMMET STRIP

GR4A4030SB25A379004

THE GIRT IS LOOSE. 

THERE IS A GAP BETWEEN 

THE HEAD END TUBE AND 

THE GIRT.

IMPROPERLY INSTALLED GIRT
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(6) If the girt is determined to be installed properly, skip to paragraph 3.E.

D. Girt Removal and Repair

NOTE: The removal and installation of the girt is a major repair. Therefore, units on which the girt 

is installed incorrectly must be shipped to a Goodrich Service Center to perform those 

repairs.

(1) Move the unit to a Goodrich Service Center for repair of the girt installation. Refer to Goodrich 

SNL 25-191 for packaging and shipping instructions.

E. Modify Girt

(1) Use the inflate/deflate valve to deflate the inflatable.

(2) Use scissors to remove the snap loop by cutting the snap loop off flush along the edge of the 

girt, without damaging the girt. See Figure 5.

Figure 5. 

Remove the Snap Loop

TO RELEASE SLIDE

PALF ESI AR. 1

ELDNAHLL UP. 2

GR4A4030SB25A379005

USE SCISSORS TO CUT OFF

THE SNAP LOOP FLUSH WITH 

THE EDGE OF THE GIRT.

 CUT ALONG THE LINE
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(3) Position the inflatable on a flat work surface with the slide lane face up, and fold the head end 

tube fabric so that it does not lie between the upper and lower panels of the girt. See Figure 6.

Figure 6. 

Prepare Girt and Inflatable for Girt Modification

CAUTION: USE CARE TO KEEP ADHESIVE OFF OF THE GROMMETS AND THE INFLATION 

TUBE.

(4) Use urethane adhesive and bond the girt patch (P/N 240477-1) to the inside of the lower girt 

panel in accordance with the REPAIR section of CMM 25-60-38. See Figure 7. 

NOTE: The yellow side of the patch is bonded to the girt, and the six holes in the patch are 

positioned around the six grommets in the lower girt panel.

FOLD THE HEAD CROSS TUBE

SO THAT IT IS NOT BETWEEN

THE GIRT HALVES

LOWER 

GIRT

PANEL

UPPER 

GIRT

PANEL

GR4A4030SB26A379006
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Figure 7. 

Bond the Lower Girt Patch to the Inside of the Lower Girt Panel

LOWER 

GIRT 

PATCH

LOWER GIRT PANEL

GR4A4030SB25A379007

GIRT GROMMET STRIP

ALIGN THIS EDGE WITH THE

INSIDE EDGE OF THE GIRT

GROMMET STRIP.

GIRT

LOWER GIRT PATCH

GROMMETS

HOLES IN GIRT PATCH

CUTOUT

LOWER GIRT PATCH

IS CENTERED ON THE

LOWER GIRT PANEL
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(5) Remove all excess adhesive from the grommets, girt, and tube.

(6) Turn the inflatable over (slide lane is face down).

(7) If needed, fold the head end tube fabric so that the inflation tube fabric is not between the upper

and lower panels of the girt. Refer to Figure 6.

CAUTION: USE CARE TO KEEP THE ADHESIVE OFF OF THE GROMMETS AND THE TUBE.

(8) Use urethane adhesive and bond the girt patch (P/N 240477-4) to the inside of the upper girt 

panel in accordance with the REPAIR section of CMM 25-60-38. See Figure 8. 

NOTE: The yellow side of the patch is bonded to the girt, and the six holes in the patch are 

positioned around the six grommets in the lower girt panel.
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Figure 8. 

Bond the Upper Girt Patch to the Inside of the Upper Girt Panel

GIRT GROMMET STRIP

UPPER 

GIRT

PANEL

UPPER 

GIRT

PATCH

ALIGN THIS EDGE WITH THE

INSIDE EDGE OF THE GIRT

GROMMET STRIP.

GR4A4030SB25A379008

UPPER GIRT PATCH

IS CENTERED ON THE

UPPER GIRT PANEL

HOLES IN GIRT PATCH

GROMMETS IN

UPPER GIRT

CUTOUT

GIRT
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(9) Remove all excess adhesive from the grommets, girt, and tube.

(10) Allow the adhesive to cure 8 hours minimum before proceeding to the next step.

(11) Use radiant heat coating to touch up any over cementing on the inflation tube fabric as needed 

in accordance with the REPAIR section of CMM 25-60-38.

NOTE: The girt folding fixture P/N 540633-1 is a two piece fixture made from P/N 540633-2 

and P/N 504633-3.

(12) Place the girt inside of the girt folding fixture (P/N 540633-1) as follows.

(a) Turn the inflatable over (slide surface face up), while maintaining the fold in the head end 

cross tube. Refer to Figure 6.

(b) Position the upper and lower girt halves flat against each other. Refer to Figure 6.

(c) Open the fixture (P/N 540633-3) and place it flat on the work surface with the text face up.

(d) Position the fixture under the girt with the text “SNAP THIS END” on the right of the girt. 

Refer to Figure 9.

(e) Align the screws on the fixture plate labeled “A” with the third grommet from the edge and 

place the screws through the grommets. Refer to Figure 9.
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Figure 9. 

Set Girt in Folding Fixture

(f) Open fixture P/N 540633-2 with the text face up and align the fixture (P/N 540633-2) so 

that text “SNAP THIS END” is toward the right side of the girt.

(g) Align the holes in plate “B” with the screws in plate “A” and place the screws through the 

holes in plate “B.” Refer to Figure 10.

Figure 10. 

Assemble Girt in Folding Fixture

SCREWS ARE THROUGH

THE THIRD GROMMET

FROM EACH EDGE.

"SNAP THIS SIDE"

Gr4A4030SB25A379009

SNAP THIS SIDE FIXTURE

P/N 540633-3

SNAP THIS END

END

"SNAP THIS SIDE" GR4A4030SB25A379010

PLATE SCREWS GIRT

SNAP TH SI S DI E

SNAP TH SI S DI E

540633-3

540633-2

SNAP THIS END
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(h) Install wing nuts onto the screws, so that the girt is held tightly.

(i) Fold plate “C” under and around plate “A.” Refer to Figure 11.

(j) Fold Plate “D” around Plate “C.” Refer to Figure 11.

Figure 11. 

Fold Girt

(k) Use packing clamps to hold the fixture closed. Refer to Figure 12.

Figure 12. 

Clamp Girt Fixture

1. FOLD PLATE "C"

 UNDER PLATE "A"

2. FOLD PLATE "D"

 UNDER PLATE "C"

PLATE A

PLATE B

GR4A4030SB25A379011

PACKING CLAMP

PACKING CLAMP

GR4A4030SB25A379012
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CAUTION: THE TEMPERATURE IN THE HEATER BOX SHOULD NOT EXCEED

165° F (73.9° C).

CAUTION: KEEP ALL INFLATION TUBE FABRIC OUT OF THE HEATER BOX.

(13) Heat set the “Z” fold into girt.

(a) Place the heater box (P/N 540743-1) over the girt and fixture while keeping the tube fabric 

outside of the heater box, with a digital thermocouple in the hole in the top of the heater 

box. Refer to Figure 13.

(b) Set the heat gun roughly 4 feet (1.22 meters) away from the heater box, with the heat gun 

pointing to blow heat into the opening on the heater box. Refer to Figure 13.

Figure 13. 

Heater Box and Heat Gun Setup

(c) Monitor the thermocouple for 10 minutes until the temperature stabilizes and confirm the 

temperature is 155° to 165° F (68.3° to 73.9° C).

(d) If the temperature is not within the range, move the heat gun closer or further from the 

heater box to increase or decrease the amount of heat, and repeat step 13(c), above.

(e) Once the temperature has stabilized between 155° to 165° F (68.3° to 73.9° C), keep the 

girt in the heater box for 30 minutes.

(f) Remove the heat gun and heater box and allow the girt to cool to room temperature.

(g) Remove the clamps and the girt folding fixture.

(14) Use a permanent marker and cross out the girt assembly dash number located on the girt. Mark 

the new girt assembly dash number in the same location on the girt. See Table 6, below, for the 

applicable dash number.

GR4A4030SB25A379013

HEAT GUN

THERMOCOUPLE

HEATER BOX

(P/N 540743-1)

4 FT. (1.22 m) INFLATABLE

OPENING
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F. Inspect the Aspirator Body.

NOTE: Two alternative procedures are provided to inspect the aspirator. The procedure used will 

depend on tool availability in the workshop. The first procedure (Step 3.F(1)) requires a 

flexible fiberscope (borescope), normal maintenance, and packing tools in accordance 

with the Goodrich CMM and Packing Instructions. The alternative procedure (Step 3.F(2)) 

uses normal maintenance and packing tools in accordance with the Goodrich CMM and 

Packing Instructions.

(1) Aspirator Inspection Procedure

NOTE: This procedure requires a fiberscope (borescope) to complete. If a fiberscope is not 

available, skip to paragraph 3.F.(2).

(a) Use your hand and gently push the aspirator flapper doors partially open.

CAUTION: DO NOT DRAG THE FIBERSCOPE PROBE ALONG THE SEAL ON THE 

FLAPPER DOORS OR ON THE RIM OF THE ASPIRATOR INLET.

(b) Use a flexible fiberscope (borescope) and visually check the aspirator body for cracks.

(c) Use a flexible fiberscope (borescope) and visually check the inlet cross tube for cracks 

and/or other damage. See Figure 14, below.

(d) If no damage is found, then skip to paragraph 3.F(1)g), below.

(e) If damage is found, remove the aspirator (P/N 5A3265-13) in accordance with 

DISASSEMBLY section of CMM 25-60-38.

(f) Replace the body per the REPAIR section of CMM 25-60-40.

NOTE: The aspirator body is not included in the modification kit or packing kit. The 

aspirator body and the seal ring are a matched set and must be replaced 

together. The matched set is available as a kit P/N 490255-1.

NOTE: Later aspirators have the inlet fitting bonded to the aspirator bodies. On later 

aspirators, plan to replace the inlet fitting (P/N 3A3910-1) also when replacing 

the aspirator body.

(g) Test/inspect the aspirator flapper doors.

1) Use your hand and gently push the aspirator flapper doors fully open. See Figure 15, 

below.

2) Quickly release the flapper doors and observe their action.

NOTE: The flapper doors should return to the normally closed position without 

hesitation.
Goodrich

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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

3) Repeat steps 1) and 2) above, for a total of three trials.

NOTE: If the flapper doors operate normally, skip steps 4) through 8), below, and 

proceed with step 9), below. If the flapper doors stick open or hesitate before 

closing in any of the trials above, proceed with step 4), below.

4) Remove the aspirator (P/N 5A3265-13) in accordance with the DISASSEMBLY 

section of CMM 25-60-38.

5) Remove and check the closure assist spring (P/N 3A3733-1). Replace the spring if it 

is out of tolerance. Refer to CMM 25-60-40, DISASSEMBLY, CHECK and ASSEMBLY 

sections.

NOTE: The Closure Assist Spring (P/N 3A3733-1) is not included in the Modification 

Kit.

6) Re-check the aspirator flapper door action. Reference steps 1) through 3), above.

NOTE: If the flapper doors operate normally, skip steps 7) and 8), below, and proceed with step 9), below.

7) If the flapper door action is not correct after replacing the closure assist spring, then 

replace the aspirator body per the REPAIR section of CMM 25-60-40. (Reference also 

the Notes following step 3.F(1)(f), above).

8) After replacing the aspirator body, check the flapper door action. (Reference steps 1) 

through 3), above.)

9) After all checks of the aspirator have been satisfactorily completed, mark the aspirator 

body with the information “SB 25-379” adjacent to the aspirator nameplate.

(h) Reinstall the aspirator in the inflatable assembly in accordance with the ASSEMBLY 

section of CMM 25-60-38.

(i) Skip to paragraph 3.G.

(2) Alternate Aspirator Inspection Procedure

(a) Remove the aspirator (P/N 5A3265-13) in accordance with the DISASSEMBLY section of 

CMM 25-60-38.

(b) Visually check the aspirator body for cracks.

(c) Shine a light source into the aspirator outlet and visually check the inlet cross tube for 

cracks and/or other damage. See Figure 14, below.

(d) If no damage is found, then skip to paragraph 3.F(2),(f).
Goodrich

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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

(e) If damage is found on the aspirator body, replace the body per the REPAIR section of CMM 

25-60-40.

NOTE: The aspirator body is not included in the modification kit or packing kit. The 

aspirator body and the seal ring are a matched set and must be replaced 

together. The matched set is available as a kit P/N 490255-1. 

NOTE: Later aspirators have the inlet fitting bonded to the aspirator bodies. On later 

aspirators, plan to replace the inlet fitting (P/N 3A3910-1) also when replacing 

the aspirator body.

(f) Test/Inspect the aspirator flapper doors.

1) Use your hand and gently push the aspirator flapper doors fully open. See Figure 15, 

below.

2) Quickly release the flapper doors and observe their action.

NOTE: The flapper doors should return to the normally closed position without 

hesitation.

3) Repeat steps 1) and 2) above, for a total of three trials.

NOTE: If the flapper doors operate normally, skip steps 4) through 7), below, and 

proceed with step 8), below. If the flapper doors stick open or hesitate before 

closing in any of the trials above, proceed with step 4), below.

4) Remove and check the closure assist spring (P/N 3A3733-1). Replace the spring if it 

is out of tolerance. Refer to CMM 25-60-40, DISASSEMBLY, CHECK and ASSEMBLY 

sections.

NOTE: The closure assist spring (P/N 3A3733-1) is not included in the modification 

kit.

5) Re-check aspirator flapper door action. Reference steps 1) through 3), above.

NOTE: If the flapper doors operate normally, skip steps 6) and 7), below and proceed with step 8), below.

6) If the flapper door action is not correct after replacing the closure assist spring, then 

replace the aspirator body per the REPAIR section of CMM 25-60-40. (Reference also 

the Notes following step (3.F(2)(e), above.)

7) After replacing the aspirator body, check the flapper door action. (Reference steps 1) 

through 3), above.)

8) After all checks of the aspirator have been satisfactorily completed, mark the aspirator 

body with the information “SB 25-379” adjacent to the aspirator nameplate.

(g) Reinstall the aspirator in the inflatable assembly in accordance with the ASSEMBLY 

section of CMM 25-60-38.
Goodrich

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 Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

Figure 14. 

Aspirator Inlet Cross Tube Inspection

GR4A4030SB25A379014

FLAPPER DOORS

(INLET)

INSPECT THE LENGTH

OF THE INLET CROSS TUBE FOR

CRACKS

INLET

CROSS

TUBE
Goodrich

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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

Figure 15. 

Flapper Door Check

PUSH INWARD

GENTLY HERE

PUSH INWARD

GENTLY HERE

GR4a4030SB25A379015
Goodrich

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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

G. Regulator Valve Modification

CAUTION: CONFIRM THAT THE SAFETY PIN IS INSTALLED IN THE REGULATOR VALVE 

BEFORE MOVING THE CHARGED CYLINDER.

NOTE: Obtain the Regulator Modification Kit P/N 490402-2 from Modification Kit P/N 490402-1 

or P/N 490402-3.

(1) Move the charged cylinder assembly to the valve shop.

(2) Discharge the charged cylinder assembly in accordance with the DISASSEMBLY section of 

CMM 25-60-39.

(3) Remove the regulator valve (P/N 4A4047-7) from the cylinder in accordance with the 

DISASSEMBLY section of CMM 25-60-39.

(4) Remove the gauge guard (P/N 4A3702-3) from the regulator valve in accordance with the 

DISASSEMBLY section of CMM 25-60-39.

(5) Use a marker to mark the location of the adjuster with reference to the regulator valve body.

(6) Turn the adjuster counterclockwise to reduce the output pressure to 340 to 380 psig (2344 to 

2620 kPag) in accordance with the TESTING AND FAULT ISOLATION section of CMM 25-60-

39.

NOTE: For the initial adjustment, one full turn of the adjuster counterclockwise from the 

reference mark (See Step (5)) will result in near target output pressure.

(7) Confirm the regulator valve output pressure by performing the Actuation Force/Pressure 

Regulation Test in accordance with the TESTING AND FAULT ISOLATION section of CMM 25-

60-39.

(8) If the valve output trace is within the specifications of the regulator valve P/N 4A4047-8 in 

accordance with the TESTING AND FAULT ISOLATION section of CMM 25-60-39, then skip to 

step (10), below.

(9) If the valve output trace is not within the specifications of regulator valve P/N 4A4047-8 in 

accordance with the TESTING AND FAULT ISOLATION section of CMM 25-60-39, then repeat 

step (6) and NOTE, above.

(10) Remove and discard the rod seal (P/N 1A2419) and O-ring (P/N 1A2313-7) in accordance with 

of CMM 25-60-39, DISASSEMBLY section, refer to paragraph 3.B., steps (39) through (49)).

(11) Install the rod seal (P/N 1A2419) and O-ring (P/N 1A2313-7) from the modification kit in 

accordance with the ASSEMBLY section of CMM 25-60-39.

(12) Install the decal P/N 510236-2 as shown in Figure 16.
Goodrich

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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

Figure 16. 

Install the Decal on the Regulator

(13) Cross out regulator valve assembly dash number located on the label on the valve body. Use a 

permanent marker to mark the regulator valve assembly dash number on the label. See Table 6, 

below, for the applicable dash number.

(14) Use a permanent marker to mark the valve body with the information “SB 25-379” adjacent to 

the nameplate.

(15) Leak test the regulator valve in accordance with the TESTING AND FAULT ISOLATION section 

of CMM 25-60-39.

(16) If the leak test fails, repair in accordance with REPAIR section of CMM 25-60-39, and repeat 

step (15).

(17) Remove and discard the O-ring (P/N 680146-916).

(18) Install new O-ring (P/N 680146-916) from the modification kit.

(19) Assemble, pressurize and leak check the charged cylinder assembly (P/N 4A4089-10) in 

accordance with the ASSEMBLY section of CMM 25-60-39.

(20) Use a permanent marker and cross out charged cylinder assembly dash number located on the 

cylinder. Use a permanent marker or stencil to mark the new charged cylinder assembly dash 

number in the same location on the cylinder. See Table 6, below, for the applicable dash 

number.

(21) Mark the charged cylinder assembly with the information “SB 25-379” near the charged cylinder 

assembly part number.

GAUGE

GUARD

REGULATOR

VALVE

360 PSIG

NEW

DECAL

HOLDING TOOL

P/N 3A3150-4

(REF ONLY)

GR4A4030SB25A379016
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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

H. Disassemble the Packboard

(1) Remove and discard the replaceable cord (P/N 240151-5) and the pull cord from the soft covers 

and discard.

(2) Remove the lower soft cover flap (P/N 4A4101-26) from the baseboard in accordance with the 

DISASSEMBLY section of CMM 25-60-38. Retain the firing cable strap, all screws and washers, 

if serviceable, for re-use.

(3) Discard the lower soft cover flap (P/N 4A4101-26).

(4) Remove the left and right soft cover flaps (P/N 240276-21 and P/N 240276-22) from the 

baseboard in accordance with the DISASSEMBLY section of CMM 25-60-38. Retain the covers, 

all screws, and washers, if serviceable, for re-use.

I. Modify the Packboard Soft Covers as Follows:

NOTE: Replacing the soft covers with the new soft covers is an acceptable option to modifying 

the soft covers as described in the following procedure. New soft covers can be 

purchased from Goodrich. Refer to Table 6, below, for part number information.

(1) Inspect the bottom (girt side), inside of the left and right soft covers for pointed corners. See 

Figure 17, below.

(2) If the soft cover corners are pointed, as shown in Figure 17, use scissors and trim off the points 

to create rounded corners, as shown in Figure 18, below. Retain a minimum of 0.375 inches 

(0.96 cm) of soft cover along the edge of the grommet. See Figure 18, below.

(3) Use a pencil and mark the left and right soft covers as shown in Figure 19. Mark a straight line 

from the inside radius of the soft cover to a point 4.38 inches (11.13 cm) from the edge of the 

soft cover. See Figure 19, below.
Goodrich

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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

Figure 17. 

Inspect Softcover Corners

Figure 18. 

Modify Soft Cover Corners

GR4A4030SB25A379017

INSPECT FOR POINTED

CORNERS (TWO PLACES)

USE SCISSORS TO REMOVE

POINTS AS SHOWN 0.375 INCH (0.95 CM) MINIMUM

GR4A4030SB35A379018
Goodrich

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THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

(4) Use sheet metal snips and remove the section of the soft covers shown in Figure 19. Keep the 

cut edge smooth.

NOTE: Sheet metal snips are required to cut through the aluminum reinforcements in the 

soft covers.

Figure 19. 

Mark and Trim Soft Covers

(Left Cover Shown: Right Cover Similar)

(5) Use a pencil and mark a centerline across the center of the soft cover patches (P/N 240443-1; 

from modification kit). The centerline will match with the edge of the soft cover and the side will 

fold over the top and bottom of the soft cover. See Figure 20, below.

GR4A4030SB25A379019

INSIDE

CURVE

EDGE OF 

SOFT COVER

4.38 INCHES

(11.13 CM)

CUT ON

PENCIL LINE

REMOVE

2.75 INCHES

(6.99 CM)

REF.
Goodrich

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Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

Figure 20. 

Install Patches

(Left Cover Shown: Right Cover Similar)

(6) Use urethane adhesive and bond the patches (P/N 240443-1) over the exposed edge of both 

soft covers. See Figure 20. Bond in accordance with the REPAIR section of CMM 25-60-38.

(7) Use a permanent marker and cross out the old dash number on both modified soft covers. Mark 

the soft covers with the applicable new dash number. See Table 6, below, for the applicable 

dash number.

(8) Mark both soft covers with the information “SB 25-379.”

MARK CENTER

LINE AS SHOWN

GR4A4030SB25A379020

ALIGN THE CENTER LINE

ON THE PATCH WITH THE

EDGE OF THE COVER,

AS SHOWN

P/N 240443-1

SOFT COVER PATCH
Goodrich

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4A4030-25A379

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 Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

J. Assemble the Packboard

(1) Install new bottom flap (P/N 4A4101-33; from the modification kit) and re-install the firing cable 

strap on the baseboard in accordance with the ASSEMBLY section of CMM 25-60-38.

(2) Reinstall the left and right soft covers using the retaining screws per the ASSEMBLY section of 

CMM 25-60-38.

(3) Use a permanent marker and cross out the packboard assembly dash number located on the 

baseboard. Mark the new packboard assembly dash number on baseboard. See Table 6, below, 

for the applicable dash number.

(4) Mark the baseboard with the information “SB 25-379” near the packboard assembly part 

number.

K. Modify the Inflatable

(1) Re-stencil the restraint value to read “280 LB” below the restraint tieback pocket located near 

the center of the slide surface. Refer to Figure 21, below.

(2) Modify Loop Patch

(a) Locate the loop patch (P/N 1275-103) and bungee cord (P/N 240150-1), refer to Figure 21, 

Inset.

CAUTION: CUT OFF THE WEBBING AS CLOSE TO THE PATCH AS POSSIBLE 

WITHOUT DAMAGING THE PATCH OR TUBE.

(b) Use scissors to remove the webbing loop from the patch.

(c) Discard the webbing and bungee cord.

(d) Use a permanent marker and cross out the inflatable dash number located on the inflatable 

nameplate. Mark the new inflatable dash number on the nameplate. See Table 6, below, for 

the applicable dash number.
Goodrich

ALERT SERVICE BULLETIN

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Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

Figure 21. 

Stencil and Webbing Locations on Inflatable

GR4A4030SB25A379021

REMOVE "170"

AND STENCIL

"280"

INSET

USE SCISSORS TO REMOVE THE LOOP

PATCH WEBBING IN THIS LOCATION ONLY.
Goodrich

ALERT SERVICE BULLETIN

4A4030-25A379

Page 34 of 38

 Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

L. Modify the Girt Sleeve

NOTE: If Goodrich Service Bulletin 25-350 is being performed in conjunction with this Service 

Bulletin, skip Steps 3.L (1) and 3.L(2) of this Service Bulletin. Instead, determine the 

center of the girt sleeve flap (approximately 9 inches (22.9 cm) from the edge) and use a 

pencil to mark a centerline in the following steps. (See Figure 22, below).

(1) Use the heavy wire cutters to cut the pack opening pin lanyard at the loop and remove the 

lanyard from the girt sleeve.

(2) Discard the lanyard.

(3) Use a stitch cutter to remove the stitches attaching the ends of the strips of Velcro Hook nearest 

the center of the girt sleeve flap. Remove 1.5 inches (3.81 cm) of thread from the end of the 

strip.

(4) Use a tape measure and pencil to mark a line on the Velcro strips 1.0 inches (2.54 cm) from the 

center of the girt sleeve flap. Refer to Figure 22, below.

Figure 22. 

Modify Girt Sleeve Flap Velcro

(5) Use scissors and cut the Velcro strips at the mark to remove a small piece of Velcro.

(6) Use nylon thread (P/N 810116-1) and sew the end of each Velcro strip to the girt sleeve flap in 

accordance to the REPAIR section of CMM 25-60-38.

NOTE: Locate the stitching 1/8 to 3/16 inch (0.32 to 0.48 cm) from the edge of the Velcro 

and use 5 - 8 stitches per inch (2.54 cm).

TO INFLATE

1.0 INCH (2.54 CM)

NYLON TUBE

GR4A4030SB25A379022

1.0 INCH (2.54 CM)

VELCRO

CENTER OF GIRT 

SLEEVE OR SLIT 

VELCRO
Goodrich

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Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

(7) Fit the girt sleeve flap patch (P/N 240470-2; from the modification kit) on the top of the flap by 

aligning the “V” cut over the slit in the flap (toward the nylon tube) and align the flat side of the 

patch with the edge of the flap. See Figure 23, below. Use a pencil to mark (outline) the patch 

location on the flap.

Figure 23. 

Mark and Install Patch Onto the Girt Sleeve Flap

(8) Use urethane adhesive and bond the girt sleeve patch (P/N 240470-2; from the modification kit) 

onto the girt sleeve flap, so that the two halves become one. See Figure 23, above. Bond in 

accordance with the REPAIR section of CMM 25-60-38. 

(9) Install the lanyard patch (P/N 240473-1; from the modification kit) onto the girt sleeve by 

bonding the lanyard patch so that the hole in the patch goes around the center grommet 

between the loop strip and the grommet strip. The long side of the patch should be parallel with 

the edge of the grommet strip with the lanyard box and cross stitch facing up and toward the 

attachment strap. Bond the patch with urethane adhesive. Bond in accordance with the REPAIR 

section of CMM 25-60-38. See Figure 24.

TO INFLATE

NYLON TUBE SLIT IN THE FLAP

GR4A4030SB25A379023

GIRT SLEEVE FLAP

PATCH P/N 240470-2
Goodrich

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 Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

Figure 24. 

Lanyard Assembly

(10) Route the lanyard through the center grommet and then through the eyelet of the parachute pin 

(P/N 300698-1; from the modification kit). See Figure 24, INSET A.

NOTE: Keep the adhesive off the nylon webbing and the daisy chain loops. Remove any 

excess adhesive from grommets, girt sleeve and patch.

(11) Fold the lanyard back so that the total length of the lanyard and pin is 4.14 to 4.38 inches (10.52 

- 11.13 cm) from the edge of the grommet strip. Then sew a 0.375 x 1.0 inch (0.95 x 2.54 cm) 

box and cross into the lanyard using bonded nylon thread. Sew in accordance with the REPAIR 

section of CMM 25-60-38. See Figure 24, INSET A.

(12) Use a permanent marker and cross out the girt sleeve dash number located on the girt sleeve. 

Mark the new girt sleeve dash number on the girt sleeve. See Table 6, below, for the applicable 

dash number.

(13) Mark the girt sleeve with the information “SB 25-379.”

ATTACHMENT

STRAP

GR4A4030SB25A379024

INSET A

PARACHUTE

PIN EYELET

ROUTE LANYARD 

THROUGH GROMMET 

BEFORE ATTACHING

PARACHUTE PIN

4.14 to 4.38 INCHES

(10.52 - 11.13 CM)

GROMMET STRIP

PATCH IS INSTALLED

AROUND CENTER

GROMMET

LOOP STRIP

WEBBING LANYARD ON THE

PATCH IS LOCATED

UP AND TOWARD THE

ATTACHMENT STRAP

0.375 x 1 INCH

BOX AND CROSS

(0.95 x 2.54 CM)
Goodrich

ALERT SERVICE BULLETIN

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Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

M. Mark the Evacuation Slide

(1) Use permanent marker and cross out the old system dash number. Mark the new system dash 

number (see Table 6, below) on the system identification placard on the girt.

(2) Replace the part number bar code patch as follows. See Figure 25, below.

Figure 25. 

Bar Code Location

(a) Carefully cut the stitches and remove the white portion of the existing part number bar code 

patch.

(b) Discard the removed patch.

(c) Use scissors and trim any loose threads that remain.

(d) Install the new part number bar code patch (P/N 490402-17) at the same location as the 

patch that was removed. Bond with urethane adhesive in accordance with the REPAIR 

section of CMM 25-60-38.

(3) Permanently mark the girt adjacent to the system identification placard with the information 

“SB 25-379" to indicate compliance with this action.

BOTTOM VIEW

GR4A4030SB25A379025

PNR XXXXXXX-XXX
Goodrich

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 Orig. - Aug 10/09

THIS DOCUMENT SUBJECT TO THE CONTROLS AND RESTRICTIONS ON THE FIRST PAGE. 

N. Re-pack the slide.

(1) Complete other maintenance actions on the slide as applicable.

(2) Replace consumable components (safety tie restraints, for example) with articles from 

modification kit and/or packing kit, and install the restraint (P/N 4A3613-280; from modification 

or packing kit) and lacing assist strap (P/N 240428-8; from modification kit) in accordance with 

Packing Instructions 501761.

(3) Re-pack the slide in accordance with Packing Instructions 501761.

(4) Re-weigh the slide and stencil the new weight on the slide placards.

4. Identification

Part numbers for the evacuation slide and components are updated upon completion of these 

modifications. Table 6, below, provides pre- and post-modification part number information.

Table 6. Part Number Information

NOTE: *This information is not marked on the slide and is listed for reference only.

Description Pre-SB

Part Number

Post-SB

Part Number

Equivalent New

Production Item

Slide, Fwd Door, LH/RH 4A4030-4 4A4030-5 4A4030-5

Slide Assembly* 4A4031-4 4A4031-5 4A4031-5

Inflatable Assembly 4A4032-2 4A4032-3 4A4032-3

Girt Assembly 4A4057-1 4A4057-001 4A4057-57

Sleeve, Girt 220152-3 220152-002 220152-6

Cylinder Assembly, Charged 4A4089-7 4A4089-10 4A4089-10

Regulator Assembly, Pilot Valve 4A4047-7 4A4047-8 4A4047-8

Packboard Assembly 4A4021-35 4A4021-45 4A4021-45

Cover Assembly, Soft, Left 240276-21 240276-002 240276-39

Cover Assembly, Soft, Right 240276-22 240276-003 240276-40