AD 84-08-05 R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727-100 Airplanes |
Unsafe Condition
Loss of airspeed information due to conditions related to the pitot-static system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Connect first and second pilots' flight instruments to the appropriate pitot-static systems per CAR 4b.612 with approved means; perform pitot-static system leak check per FAR Part 91.170; conduct air data system functional test; perform pitot heat system functional check.
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Compliance Time
no later than November 5, 1984
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Affected Aircraft
Boeing Model 727-100 airplanes modified with Performance Data Computer under STC SA1602NM
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Federal Register Abstract
Pitot-Static Systems
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_84-08-05_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-08-05 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727-100 Airplanes Subject: Pitot-Static Systems Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/01/1984 Make: The Boeing Company Model: 727-100 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 84-08-05 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4889 AD NUMBER: 84-08-05 R1 SUBJECT HEADING: BOEING Model 727-100 Airplanes ACTION: SUMMARY: DATES: Effective August 1, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-08-05 R1 BOEING: Amendment 39-4852 as amended by Amendment 39-4889. Applies to Boeing Model 727-100 airplanes modified to install a Performance Data Computer under STC SA1602NM. To preclude the loss of airspeed information due to conditions related to the pitot- static system, accomplish the following no later than November 5, 1984, unless already accomplished. A) Connect the first and second pilots' flight instruments to the appropriate pitot-static systems to conform with Civil Air Regulations (CAR) 4b.612 using a means approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. B) Perform a leak check of the pitot-static system in accordance with Federal Aviation Regulations (FAR) Part 91.170. C) Perform a functional test of the air data system. D) Perform a functional check of the pitot heat system. E) Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. Amendment 39-4852 became effective May 7, 1984. This Amendment 39-4889 becomes effective August 1, 1984. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_84-08-05_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-08-05 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727-100 Airplanes Subject: Pitot-Static Systems Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/01/1984 Make: The Boeing Company Model: 727-100 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 84-08-05 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4889 AD NUMBER: 84-08-05 R1 SUBJECT HEADING: BOEING Model 727-100 Airplanes ACTION: SUMMARY: DATES: Effective August 1, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-08-05 R1 BOEING: Amendment 39-4852 as amended by Amendment 39-4889. Applies to Boeing Model 727-100 airplanes modified to install a Performance Data Computer under STC SA1602NM. To preclude the loss of airspeed information due to conditions related to the pitot- static system, accomplish the following no later than November 5, 1984, unless already accomplished. A) Connect the first and second pilots' flight instruments to the appropriate pitot-static systems to conform with Civil Air Regulations (CAR) 4b.612 using a means approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. B) Perform a leak check of the pitot-static system in accordance with Federal Aviation Regulations (FAR) Part 91.170. C) Perform a functional test of the air data system. D) Perform a functional check of the pitot heat system. E) Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. Amendment 39-4852 became effective May 7, 1984. This Amendment 39-4889 becomes effective August 1, 1984. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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