AD 58-05-03
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
Unsafe Condition
Failure of elevator and rudder control locks due to over-tightening of the nut securing the lock lever, jamming of elevator anti-balance tab mechanism, loosening of aileron control system fittings, shorting of relays due to insecure armature spring screws, and potential fouling of elevator trim tab chain.
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Required Actions
Install special shoulder greaser bolts per Mod. D.1421, chamfer pitot head heater bus-bar supplies per Mod. D.2019, inspect and modify elevator anti-balance tab mechanism per PTL No. 160/Mod. D.2239, implement new aileron lever group fittings per Mod. D.2091, increase pilots floor cut-out per Mod. D.2120, install fairleads for elevator trim tab chain per Mod. D.1602, and inspect relays per PTL No. 147 with lock washers and varnish.
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Compliance Time
Compliance required by dates ranging from April 15, 1958, to April 15, 1959, as specified per each item (A to H).
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 700 Series Aircraft (Viscount 744, Viscount 745D models), all serial numbers.
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Federal Register Abstract
Modifications And Inspections
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_58-05-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-05-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; VICKERS Model 700 Series Aircraft Subject: Modifications And Inspections Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Vickers-Armstrongs (Aircraft Limited) Model: Viscount 744 | Viscount 745D Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 58-05-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-05-03 SUBJECT HEADING: Airworthiness Directives; VICKERS Model 700 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-05-03 VICKERS: Applies to All Viscount 700 Series Aircraft. Compliance required as indicated. In accordance with the British Air Registration Board's list of "Essential Modifications and Inspections", compliance with the following Vickers-Armstrong corrective measures is considered mandatory. The FAA concurs and considers compliance therewith mandatory. Compliance provisions are detailed in the Vickers publications referenced in each item. A. MODIFICATION ELEVATOR AND RUDDER CONTROL LOCKS. To insure freedom of movement over the complete range of travel of the gust lock lever, install special shoulder greaser bolts in accordance with Mod. D.1421 to prevent over-tightening of the nut securing the lock lever. Also, on elevator gust lock unit P/N A.1949-1 chamfer the sides of the slotted recess in accordance with TNS No. 64, issue 2. Compliance required by April 15, 1958. B. CONNECTION OF A.C. PHASE TRANSFORMER. Mod. D.1677 revises the electrical circuit, placing transformers on the input side of the circuit breakers to prevent feed back through the primary of A.C. phases transformers. (This is further to Mod. D.1513.) Compliance required by April 15, 1958. C. REDISTRIBUTION OF BUS-BAR SUPPLIES TO PITOT HEAD HEATERS. By supplying the heaters from different bus-bars, complete loss of pitot-head deicing due to failure of one bus-bar is prevented. Mod. D.2019 covers this subject. Compliance required by September 15, 1958. D. INSPECTION AND MODIFICATION OF ELEVATOR ANTI-BALANCE TAB MECHANISM. To prevent over-center jamming of the elevator anti-balance tab mechanism, PTL No. 160 prescribes precautionary checks of the tab mechanism maximum travel as well as modifying the link. (PTL No. 160 and Mod. D.2239 cover this subject.) Compliance required by April 15, 1958. E. IMPROVE THE LOCKING OF THE FORWARD ELEVATOR AND AILERON LEVER GROUP AT COCKPIT STATION 53 AND AILERON LEVER GROUP AT FUSELAGE STATION 462.68. To prevent lost movement in the aileron control system and possible loosening of the aileron bellcrank level, Mod. D.2091 introduces new fittings and attachment means. Compliance with PTL No. 141 or Mod. D.2091 required by April 15, 1958. F. INCREASE CUT-OUT IN PILOTS FLOOR FOR ELEVATOR CONTROL CLEARANCE. Mod. D.2120 increases size of cutaway in pilots floor area to eliminate fouling of elevator rod attachment bolt when incorrectly assembled. Compliance with PTL No. 140 or Mod. D.2120 required by July 15, 1958. G. FAIRLEADS FOR ELEVATOR TRIM TAB CHAIN AT FRAME STATION 783. In order to preclude jamming of the elevator trim tab chain where it passes through the frame Station 783, a fairlead Vickers drawing No. 70152, P/N's 1205, 1207, and 1209, should be installed at the cutaway in the frame in accordance with Vickers Mod. D.1602. Compliance required by April 15, 1958. H. INSPECTION OF TYPE S.1, S.2 AND S.4 RELAYS. To prevent shorting of relays due to loosening of the securing screws on the armature springs PTL No. 147 specifies inspection for security and locking of the shakeproof lock washers and to further lock by the application of either Glyptal Varnish CS.184 or Bakelite Varnish V.130. Compliance required by April 15, 1959. FOOTER:
Document Text
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AD Final Rules - DRS_58-05-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-05-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; VICKERS Model 700 Series Aircraft Subject: Modifications And Inspections Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Vickers-Armstrongs (Aircraft Limited) Model: Viscount 744 | Viscount 745D 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: 58-05-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-05-03 SUBJECT HEADING: Airworthiness Directives; VICKERS Model 700 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-05-03 VICKERS: Applies to All Viscount 700 Series Aircraft. Compliance required as indicated. In accordance with the British Air Registration Board's list of "Essential Modifications and Inspections", compliance with the following Vickers-Armstrong corrective measures is considered mandatory. The FAA concurs and considers compliance therewith mandatory. Compliance provisions are detailed in the Vickers publications referenced in each item. A. MODIFICATION ELEVATOR AND RUDDER CONTROL LOCKS. To insure freedom of movement over the complete range of travel of the gust lock lever, install special shoulder greaser bolts in accordance with Mod. D.1421 to prevent over-tightening of the nut securing the lock lever. Also, on elevator gust lock unit P/N A.1949-1 chamfer the sides of the slotted recess in accordance with TNS No. 64, issue 2. Compliance required by April 15, 1958. B. CONNECTION OF A.C. PHASE TRANSFORMER. Mod. D.1677 revises the electrical circuit, placing transformers on the input side of the circuit breakers to prevent feed back through the primary of A.C. phases transformers. (This is further to Mod. D.1513.) Compliance required by April 15, 1958. C. REDISTRIBUTION OF BUS-BAR SUPPLIES TO PITOT HEAD HEATERS. By supplying the heaters from different bus-bars, complete loss of pitot-head deicing due to failure of one bus-bar is prevented. Mod. D.2019 covers this subject. Compliance required by September 15, 1958. D. INSPECTION AND MODIFICATION OF ELEVATOR ANTI-BALANCE TAB MECHANISM. To prevent over-center jamming of the elevator anti-balance tab mechanism, PTL No. 160 prescribes precautionary checks of the tab mechanism maximum travel as well as modifying the link. (PTL No. 160 and Mod. D.2239 cover this subject.) Compliance required by April 15, 1958. E. IMPROVE THE LOCKING OF THE FORWARD ELEVATOR AND AILERON LEVER GROUP AT COCKPIT STATION 53 AND AILERON LEVER GROUP AT FUSELAGE STATION 462.68. To prevent lost movement in the aileron control system and possible loosening of the aileron bellcrank level, Mod. D.2091 introduces new fittings and attachment means. Compliance with PTL No. 141 or Mod. D.2091 required by April 15, 1958. F. INCREASE CUT-OUT IN PILOTS FLOOR FOR ELEVATOR CONTROL CLEARANCE. Mod. D.2120 increases size of cutaway in pilots floor area to eliminate fouling of elevator rod attachment bolt when incorrectly assembled. Compliance with PTL No. 140 or Mod. D.2120 required by July 15, 1958. G. FAIRLEADS FOR ELEVATOR TRIM TAB CHAIN AT FRAME STATION 783. In order to preclude jamming of the elevator trim tab chain where it passes through the frame Station 783, a fairlead Vickers drawing No. 70152, P/N's 1205, 1207, and 1209, should be installed at the cutaway in the frame in accordance with Vickers Mod. D.1602. Compliance required by April 15, 1958. H. INSPECTION OF TYPE S.1, S.2 AND S.4 RELAYS. To prevent shorting of relays due to loosening of the securing screws on the armature springs PTL No. 147 specifies inspection for security and locking of the shakeproof lock washers and to further lock by the application of either Glyptal Varnish CS.184 or Bakelite Varnish V.130. Compliance required by April 15, 1959. FOOTER:
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