AD 84-03-09
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sundstrand | Digital Flight Data Recorder | Airworthiness Directives; SUNDSTRAND DATA CONTROL, INC. Model 573A, Digital Flight Data Recorder (DFDR) Part Numbers 981-6009-001/010/011/012/013/014 |
| appliance | Sundstrand | Digital Flight Data Recorder | Airworthiness Directives; SUNDSTRAND DATA CONTROL, INC. Model 573A, Digital Flight Data Recorder (DFDR) Part Numbers 981-6009-001/010/011/012/013/014 |
Unsafe Condition
Loss of recorded data due to lack of Mod 15 modification on DFDRs with Mod 8 but not Mod 15.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the DFDR to determine modification status. For units with Mod 8 but not Mod 15, accomplish Sundstrand Service Bulletin No. 23 (Mod 15) or equivalent FAA-approved revisions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 2,000 hours time in service or 1 year after the effective date of this AD, whichever occurs later
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Affected Aircraft
SUNDSTRAND DATA CONTROL, INC. Model 573A DFDR, Part Numbers 981-6009-001/010/011/012/013/014
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Digital Flight Data Recorder
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_84-03-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-03-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; SUNDSTRAND DATA CONTROL, INC. Model 573A, Digital Flight Data Recorder (D...Show more Subject: Digital Flight Data Recorder Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/19/1984 Make: Sundstrand Model: Digital Flight Data Recorder Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 84-03-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4809 AD NUMBER: 84-03-09 SUBJECT HEADING: Airworthiness Directives; SUNDSTRAND DATA CONTROL, INC. Model 573A, Digital Flight Data Recorder (DFDR) Part Numbers 981-6009-001/010/011/012/013/014 ACTION: SUMMARY: DATES: Effective March 19, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-03-09 SUNDSTRAND DATA CONTROL, INC.: Amendment 39-4809. Applies to Sundstrand Model 573A, Digital Flight Data Recorder (DFDR) Part Numbers 981-6009-001/010/011/012/013/014. To prevent loss of recorded data, accomplish the following within the next 2,000 hours time in service or 1 year after the effective date of this AD, whichever occurs later, unless already accomplished: A. Inspect the DFDR to determine modification status. For DFDR's which have Mod 8 accomplished, but not Mod 15, accomplish Sundstrand Service Bulletin No. 23, (Document No. 012-0118-123), (Mod 15), dated August 2, 1982, or later FAA approved revisions. B. 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. This amendment becomes effective March 19, 1984. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_84-03-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-03-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; SUNDSTRAND DATA CONTROL, INC. Model 573A, Digital Flight Data Recorder (D...Show more Subject: Digital Flight Data Recorder Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/19/1984 Make: Sundstrand Model: Digital Flight Data Recorder Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 84-03-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4809 AD NUMBER: 84-03-09 SUBJECT HEADING: Airworthiness Directives; SUNDSTRAND DATA CONTROL, INC. Model 573A, Digital Flight Data Recorder (DFDR) Part Numbers 981-6009-001/010/011/012/013/014 ACTION: SUMMARY: DATES: Effective March 19, 1984. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 84-03-09 SUNDSTRAND DATA CONTROL, INC.: Amendment 39-4809. Applies to Sundstrand Model 573A, Digital Flight Data Recorder (DFDR) Part Numbers 981-6009-001/010/011/012/013/014. To prevent loss of recorded data, accomplish the following within the next 2,000 hours time in service or 1 year after the effective date of this AD, whichever occurs later, unless already accomplished: A. Inspect the DFDR to determine modification status. For DFDR's which have Mod 8 accomplished, but not Mod 15, accomplish Sundstrand Service Bulletin No. 23, (Document No. 012-0118-123), (Mod 15), dated August 2, 1982, or later FAA approved revisions. B. 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. This amendment becomes effective March 19, 1984. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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