# AD 88-20-02: Manifold Clamps - Type: Airworthiness directive - Status: Current - Products: Boeing DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87) and MD-88 - Effective: October 11, 1988 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-6025 - Registered aircraft: 100 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3205475085449497862569F2006DEBCE.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/88-20-02 ## The airworthiness directive 88-20-02 MCDONNELL DOUGLAS: Amendment 39-6025. Applies to Model DC-9-80 (MD-80) series airplanes and Model MD-88 airplanes, certificated in any category, equipped with Janitrol P/N 14J93-350 clamps manufactured after March 1, 1988, including, but not limited to the following airplane factory serial numbers: 49462 49584 49658 49463 49585 49661 49464 49586 49667 49509 49592 49668 49559 49593 49669 49560 49604 49670 49561 49605 49671 49562 49617 49672 49563 49619 49701 49564 49620 49702 49565 49621 49703 49566 49622 49704 49571 49623 49705 49572 49624 49707 49573 49625 49711 49577 49644 49712 49578 49645 49389 49579 49646 49583 49657 NOTE: Additionally, airplanes other than those listed above are affected by this AD, if suspect clamps were installed on engine eighth or thirteenth stage pneumatic manifold end caps as replacement parts. Compliance required as indicated, unless previously accomplished. To prevent uncontained separation of engine pneumatic manifold end caps, accomplish the following: A. Within 25 days after the effective date of this AD, inspect both engines' eighth and thirteenth stage pneumatic manifold end cap clamps, Janitrol P/N 14J93-350, for identification markings, and accomplish the following: NOTE: Refer to McDonnell Douglas DC-9 Master Illustrated Parts Catalog 36-10-00, Figure 1A, Item 105, for locations of clamps. 1. Clamps with the number "5T400" and a date stamp, or the number "89513", appearing next to Janitrol P/N 14J93-350 are acceptable, and no further action is necessary. 2. Clamps with the number "63367" appearing next to Janitrol P/N 14J93-350 must be removed prior to further flight, and replaced with airworthy clamps. 3. Clamps with the number "5T400" appearing next to Janitrol P/N 14J93-350, and without a date stamp, must be removed prior to further flight, and replaced with airworthy clamps. B. Prior to installation of any eighth or thirteenth stage pneumatic manifold end cap clamp, Janitrol P/N 14J93-350, perform the inspection required by paragraph A., above. Do not install any clamp having the number "63367", or the number "5T400" and no date stamp, appearing next to Janitrol P/N 14J93-350. C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Los Angeles Aircraft Certification Office. This amendment, 39-6025, becomes effective October 11, 1988. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A6WE](https://openairdocs.org/tcds/A6WE): The Boeing Company; names 5 of 25 models: MD-88, DC-9-81 (MD-81), DC-9-83 (MD-83), DC-9-87 (MD-87), DC-9-82 (MD-82) ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 100 (100 by airframe model, 0 by engine model) - Makers: Mcdonnell Douglas 99, Douglas 1 Models with the most aircraft: - [Mcdonnell Douglas DC-9-83(MD-83)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-83-md-83): 49 aircraft (airframe model) - [Mcdonnell Douglas DC-9-82(MD-82)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82-md-82): 22 aircraft (airframe model) - [Mcdonnell Douglas MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88): 14 aircraft (airframe model) - [Mcdonnell Douglas DC-9-87](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87): 13 aircraft (airframe model) - [Douglas DC-9-83](https://openairdocs.org/model/douglas-dc-9-83): 1 aircraft (airframe model) - [Mcdonnell Douglas DC-9-87 (MD-87)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87-md-87): 1 aircraft (airframe model) All 7 models: https://openairdocs.org/ad/88-20-02/models.md Every aircraft: https://openairdocs.org/ad/88-20-02/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.