# AD 77-02-02: Static Port Fittings

- Type: Airworthiness directive
- Status: Current
- Products: Boeing 727-100 Series and 727-200 Series
- Effective: February 22, 1977
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-2811
- Registered aircraft: 24 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EEF44DD73778FC1B862568320064D0AF.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/77-02-02

## The airworthiness directive

77-02-02 BOEING: Amendment 39-2811. Applies to Boeing Model 727-100 and -200 series airplanes certificated in all categories with .047" dia. static sensing holes. Compliance required within 3000 hours time in service after the effective date of this AD unless already accomplished. To prevent fluctuations in airspeed and altitude information due to water being ingested and retained in the static port fittings, enlarge the static port sensing holes from .047" dia. to .125" dia. in accordance with Boeing Service Bulletin 727-34-94 (to be released) or later FAA approved service bulletins, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. Boeing 727-100 airplanes already incorporating Boeing S.B. 727-25-42, Revision 1, dated March 4, 1968, with elbow fitting MS21908D6, and Boeing S.B. 727-34-57, dated April 7, 1968, enlarging the static sensing holes, are in compliance with this AD. The manufacturer's specifications and proceduresidentified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Boeing Commercial Airplane Company, P. O. Box 3707, Seattle, Washington 98124. The documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington. This amendment becomes effective February 22, 1977.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A3WE](https://openairdocs.org/tcds/A3WE): The Boeing Company; names 2 of 6 models: 727-100 Series, 727-200 Series

## 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: 24 (24 by airframe model, 0 by engine model)
- Makers: Boeing 24

Models with the most aircraft:

- [Boeing 727-223](https://openairdocs.org/model/boeing-727-223): 9 aircraft (airframe model)
- [Boeing 727-227](https://openairdocs.org/model/boeing-727-227): 4 aircraft (airframe model)
- [Boeing 727-225](https://openairdocs.org/model/boeing-727-225): 2 aircraft (airframe model)
- [Boeing 727-200](https://openairdocs.org/model/boeing-727-200): 1 aircraft (airframe model)
- [Boeing 727-212](https://openairdocs.org/model/boeing-727-212): 1 aircraft (airframe model)
- [Boeing 727-230](https://openairdocs.org/model/boeing-727-230): 1 aircraft (airframe model)
- [Boeing 727-232](https://openairdocs.org/model/boeing-727-232): 1 aircraft (airframe model)
- [Boeing 727-243](https://openairdocs.org/model/boeing-727-243): 1 aircraft (airframe model)
- [Boeing 727-247](https://openairdocs.org/model/boeing-727-247): 1 aircraft (airframe model)
- [Boeing 727-264](https://openairdocs.org/model/boeing-727-264): 1 aircraft (airframe model)
- [Boeing 727-281](https://openairdocs.org/model/boeing-727-281): 1 aircraft (airframe model)
- [Boeing 727-277](https://openairdocs.org/model/boeing-727-277): 1 aircraft (airframe model)

All 12 models: https://openairdocs.org/ad/77-02-02/models.md
Every aircraft: https://openairdocs.org/ad/77-02-02/aircraft.md

Its text cites no advisory circulars or STCs.

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