AD 71-08-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-32F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-32F (C-9A) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-32F (C-9B) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-33F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-34 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-34F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-41 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-51 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes |
Unsafe Condition
Failure to control speed brake retraction and inflight deployment of ground spoilers could result in loss of airplane control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Affix cockpit placards stating 'DO NOT EXTEND GEAR WITH SPEED BRAKES DEPLOYED' and 'DO NOT ARM GROUND SPOILERS PRIOR TO GEAR EXTENSION', or install interlock switch per McDonnell Douglas Service Bulletin 32-128 and amend AFM limitations section with the same statements. Previously installed placards may be removed if the interlock switch is installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 50 hours' time in service after effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
MCDONNELL DOUGLAS DC-9 airplanes certificated in all categories, including models DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, and others as listed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Control Of Speed Brake
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_71-08-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-08-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes Subject: Control Of Speed Brake Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/30/1971 Make: The Boeing Company Model: DC-9-11 | DC-9-12 | DC-9-13 | DC-9-14 | DC-9-15 | DC-9-15F | DC-9-21 | DC-9-31 | DC-9-32 | DC-9-32 (...Show more 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 71-08-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1346 AD NUMBER: 71-08-02 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes ACTION: SUMMARY: DATES: Effective November 30, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-08-02 MCDONNELL DOUGLAS: Amend 39-1189 as amended by amendment 39-1346. Applies to DC-9 airplanes certificated in all categories. Compliance required within the next 50 hours' time in service after effective date of this AD, unless already accomplished. To ensure pilot control of speed brake retraction and to prevent inflight deployment of ground spoilers, accomplish one of the following: 1. Affix a placard(s) in the cockpit in plain view of both crew members stating: DO NOT EXTEND GEAR WITH SPEED BRAKES DEPLOYED DO NOT ARM GROUND SPOILERS PRIOR TO GEAR EXTENSION 2. a. Install the interlock switch per McDonnell Douglas DC-9 Service Bulletin No. 32-128, dated November 17, 1971, or later FAA approved revisions, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region and b. Amend the Limitations Section, FAA Approved Airplane Flight Manual, to include the statements: Do not extend gear with speed brakes deployed. Do not arm ground spoilers prior to gear extension. NOTE: Placards previously installed per Step 1. may be removed if step 2 is accomplished. Amendment 39-1189 became effective April 13, 1971. This amendment 39-1346 becomes effective November 30, 1971. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_71-08-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-08-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes Subject: Control Of Speed Brake Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/30/1971 Make: The Boeing Company Model: DC-9-11 | DC-9-12 | DC-9-13 | DC-9-14 | DC-9-15 | DC-9-15F | DC-9-21 | DC-9-31 | DC-9-32 | DC-9-32 (...Show more 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 71-08-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1346 AD NUMBER: 71-08-02 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Airplanes ACTION: SUMMARY: DATES: Effective November 30, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-08-02 MCDONNELL DOUGLAS: Amend 39-1189 as amended by amendment 39-1346. Applies to DC-9 airplanes certificated in all categories. Compliance required within the next 50 hours' time in service after effective date of this AD, unless already accomplished. To ensure pilot control of speed brake retraction and to prevent inflight deployment of ground spoilers, accomplish one of the following: 1. Affix a placard(s) in the cockpit in plain view of both crew members stating: DO NOT EXTEND GEAR WITH SPEED BRAKES DEPLOYED DO NOT ARM GROUND SPOILERS PRIOR TO GEAR EXTENSION 2. a. Install the interlock switch per McDonnell Douglas DC-9 Service Bulletin No. 32-128, dated November 17, 1971, or later FAA approved revisions, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region and b. Amend the Limitations Section, FAA Approved Airplane Flight Manual, to include the statements: Do not extend gear with speed brakes deployed. Do not arm ground spoilers prior to gear extension. NOTE: Placards previously installed per Step 1. may be removed if step 2 is accomplished. Amendment 39-1189 became effective April 13, 1971. This amendment 39-1346 becomes effective November 30, 1971. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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