Airworthiness Directive · Amendment 39-15651 · Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes
Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes
This AD applies to Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin 737-38A1054, dated August 23, 2007.
We are adopting a new airworthiness directive (AD) for certain Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD requires replacing the existing straight-to-90- degree hose assembly for the Lavatory "A" water supply. The replacement is a new straight hose assembly and a separate 90-degree elbow fitting. This AD results from a report of a separated hose assembly for the passenger water system. We are issuing this AD to prevent a water leak into the flight deck ceiling, which could result in an electrical short and possible loss of several functions essential to safe flight.
Comply with this AD within the compliance times specified, unless already done.
Within 60 months after the effective date of this AD, replace the existing straight-to-90-degree hose assembly for the Lavatory “A” water supply with a new straight hose assembly and a separate 90-degree elbow fitting, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 737-38A1054, dated August 23, 2007.
As of the effective date of this AD, any hose assembly part having a part number identified in Table 1 of this AD must not be used in any location that is subject to the requirements of this AD. However, those parts may be used in other locations if not otherwise prohibited.
| Airplane group identified in Boeing Alert Service Bulletin 737-38A1054, dated August 23, 2007 | Existing part number(s) |
|---|---|
| 1 and 2 | 10-61998-430, AS4471-08-0401, or AS4471-08-0404. |
| 3 | 10-61998-25 or 10-60871-125. |
| 4 | 10-61998-31 or 10-60871-139. |
