AD 68-16-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | DH.125 Series 1A | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A-522 | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/R-522 | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 1A/S-522 | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/R | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 3A/RA | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
| aircraft | Textron Aviation Inc. | DH.125 Series 400A | Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes |
Unsafe Condition
Engine flameouts during icing conditions
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a placard on the flight instrument panel in clear view of the pilot reading: 'TURN ENGINE RELIGHT SWITCH ON WHEN OPERATING ENGINE ANTI-ICING SYSTEM.'
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 15 hours' time in service after the effective date of this AD, or before further flight into known or predicted icing conditions, whichever occurs first
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
HAWKER SIDDELEY Model DH-125 airplanes of all Series
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Placard To Prevent Engine Flameout
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_68-16-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-16-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes Subject: Placard To Prevent Engine Flameout Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/05/1968 Make: Textron Aviation Inc. Model: DH.125 Series 1A | DH.125 Series 1A-522 | DH.125 Series 1A/R-522 | DH.125 Series 1A/S-522 | DH.125 S...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: 68-16-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-626 AD NUMBER: 68-16-01 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes ACTION: SUMMARY: DATES: Effective August 5, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-16-01 HAWKER SIDDELEY: Amendment 39-626. Applies to all Series of Model DH- 125 airplanes. Compliance required as indicated, unless already accomplished. To prevent engine flameouts during icing conditions, within the next 15 hours' time in service after the effective date of this AD, or before further flight into known or predicted icing conditions, whichever occurs first, install a placard on the flight instrument panel in clear view of the pilot reading as follows: "TURN ENGINE RELIGHT SWITCH ON WHEN OPERATING ENGINE ANTI- ICING SYSTEM." This supersedes Amendment 39-549 (33 F.R. 2504), AD 68-03-02. This amendment becomes effective August 5, 1968. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_68-16-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-16-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes Subject: Placard To Prevent Engine Flameout Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/05/1968 Make: Textron Aviation Inc. Model: DH.125 Series 1A | DH.125 Series 1A-522 | DH.125 Series 1A/R-522 | DH.125 Series 1A/S-522 | DH.125 S...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: 68-16-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-626 AD NUMBER: 68-16-01 SUBJECT HEADING: Airworthiness Directives; HAWKER SIDDELEY Model DH- 125 Airplanes ACTION: SUMMARY: DATES: Effective August 5, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-16-01 HAWKER SIDDELEY: Amendment 39-626. Applies to all Series of Model DH- 125 airplanes. Compliance required as indicated, unless already accomplished. To prevent engine flameouts during icing conditions, within the next 15 hours' time in service after the effective date of this AD, or before further flight into known or predicted icing conditions, whichever occurs first, install a placard on the flight instrument panel in clear view of the pilot reading as follows: "TURN ENGINE RELIGHT SWITCH ON WHEN OPERATING ENGINE ANTI- ICING SYSTEM." This supersedes Amendment 39-549 (33 F.R. 2504), AD 68-03-02. This amendment becomes effective August 5, 1968. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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