AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Hose Assemblies
AD/HOSE/8 Titeflex Hoses 7/2004
Applicability: Titeflex Corporation hoses installed on, but not limited to, Boeing 737-300, -400,
-500, -600, -700, -700C, -800, -900, 747-400, 757-200, -300, 767-200, - 300, and
-300F aeroplanes.
Requirement: 1. Inspect the manufacture date code on all hoses listed in Table 1 of this Directive.
Use the Accomplishment Instructions of the applicable Boeing alert service bulletins (ASB) contained in Table 1 of this Directive.
2. If the manufacture date is 11/99 through 1/01 and there is a permanent white dot on the ID band, no further action is required for that hose.
3. If the hose manufacture date code is 11/99 through 1/01 inclusive and there is no permanent white dot on the ID band, replace the hose with a serviceable hose or perform an indirect conductive inspection/test for proper heat treat. Use the accomplishment instructions of the applicable ASB listed in Table 1 of this AD.
4. Replace the hose with a serviceable hose if any B-nut is improperly heat-treated.
Table 1. --Applicable Hose P/Ns
Aeroplane model | Boeing hose P/N | Titeflex PMA P/N | Used for | Applicable alert service bulletin |
(1) 737-300, - | S312N512-5 | 113701-5 | Engine and | 737-26A1108, |
400, and -500 | S312N512-6 | 113701-6 | cargo | Revision 1, |
aeroplanes. | BACH5R0110YP |
| compartment | dated June 27, |
| BACH5S0110XN |
| fire | 2002. |
|
|
| extinguishing |
|
|
|
| bottles. |
|
(2) 737-600, - | S316A001-1 | 115398-1 | Engine, | 737-26A1109, |
700,-700C, - | S316A001-2 | 115398-2 | auxiliary | Revision 2, |
800, -900 | S312N512-15 | 113701-15 | power unit | dated May 8, |
aeroplanes. | S312N512-17 | 113701-17 | (APU), and | 2003. |
| S312N512-18 | 113701-18 | cargo |
|
| BACH5R0110YP |
| compartment |
|
| BACH5S0110XN |
| and fire |
|
|
|
| extinguishing |
|
|
|
| bottles, |
|
|
|
| and wing-to- |
|
|
|
| strut fuel |
|
|
|
| hoses. |
|
(3) 747-400 | BACH5R0080YY |
| Forward | 747-26A2269, |
aeroplanes | BACH5R0140YU | cargo and | Revision 1, | |
| BACH5S0140XT | main deck | dated June 6, | |
| BACH5R0186YY | cargo | 2002. | |
| BACH5R0186XX | compartment |
| |
| BACH5S0080XX | fire extin- |
| |
| BACH5S0110XN | guishing |
| |
|
| bottles. |
| |
(4) 757-200 | S312N512-1 | 113701-1 | Engine, APU, | 757-26A0043, |
aeroplanes | S312N512-2 | 113701-2 | and cargo | Revision 1, |
| S312N512-3 | 113701-3 | compartment | dated |
| S312N512-4 | 113701-4 | fire | November 14, |
| BACH5R0110YP |
| extinguishing | 2002. |
| BACH5S0110XN |
| bottles. |
|
| No Number | 109422 |
|
|
(5) 757-300 | S312N512-1 | 113701-1 | Engine and | 757-26A0044, |
aeroplanes | S312N512-2 | 113701-2 | cargo | Revision 1, |
| S312N512-3 | 113701-3 | compartment | dated |
| S312N512-4 | 113701-4 | fire | November 14, |
| BACH5R0110YP |
| extinguishing | 2002. |
| BACH5S0074XN |
| bottles. |
|
| Optional |
|
|
|
| 453N2240-33 |
|
|
|
(6) 767-200, - | BACH5R0085YU |
| Cargo | 767-26A0121, |
300, and - | BACH5R0140YU | compartment | dated | |
300F | BACH5S0077XT | fire | December 19, | |
aeroplanes. | BACH5S0140XT | extinguishing | 2001. | |
| BACH5S0184XX | bottles. |
| |
| BACH5R0127YY |
|
|
Note: FAA AD 2003-23-05 Amdt 39-13369 refers.
Compliance: For Requirements 1, 2, and 3: Unless previously inspected in accordance with ASB 737-26A1108, dated November 15, 2001, ASB 737-26A1109, dated November 15, 2001, ASB 737-26A1109, Revision 1, dated November 7, 2002, ASB 747-26A2269,
dated November 1, 2001, ASB 757-26A0043, dated November 15, 2001, and ASB 757-26A0044, dated November 15, 2001, within 24 months from the effective date of this Directive.
For Requirement 4: Before further flight following the inspections detailed in Requirement 3 of this Directive.
This Airworthiness Directive becomes effective on 8 July 2004.
Background: Certain Titeflex Corporation hoses discovered with incorrect heat treatment of B-nuts prompt this Directive that is issued to prevent fire extinguishing system and fuel system hose failure due to improperly heat-treated aluminium B-nuts.
James Coyne
Delegate of the Civil Aviation Safety Authority 28 May 2004
The above AD is notified in the Commonwealth of Australia Gazette on 16 June 2004.