AD 71-11-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | FH1100 Manufacturing Corporation | 1100 | Airworthiness Directives; Fairchild Hiller Models FH-1100 and 1100 Helicopters |
| aircraft | FH1100 Manufacturing Corporation | FH-1100 | Airworthiness Directives; Fairchild Hiller Models FH-1100 and 1100 Helicopters |
Unsafe Condition
The VNE placard may not properly indicate the maximum never-exceed airspeed of 80 MPH IAS, and stabilizers with part numbers 24 62001 or 24 62001 31 may not be modified to prevent flutter or structural failure at higher speeds.
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Required Actions
Install the placard 'VNE NOT TO EXCEED 80 MPH IAS' before next flight. Remove the placard if stabilizers are modified. Modify stabilizers per Service Bulletin FH 1100 62 6 within 100 hours' time in service.
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Compliance Time
Before next flight and within 100 hours' time in service after receipt of this message.
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Affected Aircraft
Fairchild Hiller Models FH-1100 and 1100 helicopters with short stabilizers, P/N 24 62001, or extended stabilizers, P/N 24 62001 31.
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Federal Register Abstract
VNE Placard
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_71-11-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-11-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Hiller Models FH-1100 and 1100 Helicopters Subject: VNE Placard Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/19/1971 Make: FH1100 Manufacturing Corporation Model: 1100 | FH-1100 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 71-11-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1209 AD NUMBER: 71-11-03 SUBJECT HEADING: Airworthiness Directives; Fairchild Hiller Models FH-1100 and 1100 Helicopters ACTION: SUMMARY: DATES: Effective May 19, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-11-03 FAIRCHILD-HILLER: Amdt. 39-1209. Applies to Fairchild Hiller FH 1100 and Model 1100 type helicopters certificated in all categories with short stabilizers, P/N 24 62001, or extended Stabilizers, P/N 24 62001 31. 1. A. Before the next flight, install the following placard in the cockpit in full view of the pilot. "VNE NOT TO EXCEED 80 MPH IAS" B. Remove placard "VNE NOT TO EXCEED 80 MPH IAS" on helicopters with stabilizers modified in accordance with 2 below. 2. Within the next 100 hours' time in service after receipt of this message, unless already accomplished, modify stabilizers, P/N 24 62001 and P/N 24 62001 31, in accordance with Section Two of Fairchild Hiller Service Bulletin FH 1100 62 6 dated 18 March 1971 or later approved revision or an equivalent modification approved by Chief, Engineering and Manufacturing Branch, Eastern Region. This amendment is effective May 19, 1971 and was effective for all recipients of the airmail letter of March 9, 1971 and amending airmail letter of March 25, 1971 upon receipt. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_71-11-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-11-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Hiller Models FH-1100 and 1100 Helicopters Subject: VNE Placard Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/19/1971 Make: FH1100 Manufacturing Corporation Model: 1100 | FH-1100 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 71-11-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1209 AD NUMBER: 71-11-03 SUBJECT HEADING: Airworthiness Directives; Fairchild Hiller Models FH-1100 and 1100 Helicopters ACTION: SUMMARY: DATES: Effective May 19, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-11-03 FAIRCHILD-HILLER: Amdt. 39-1209. Applies to Fairchild Hiller FH 1100 and Model 1100 type helicopters certificated in all categories with short stabilizers, P/N 24 62001, or extended Stabilizers, P/N 24 62001 31. 1. A. Before the next flight, install the following placard in the cockpit in full view of the pilot. "VNE NOT TO EXCEED 80 MPH IAS" B. Remove placard "VNE NOT TO EXCEED 80 MPH IAS" on helicopters with stabilizers modified in accordance with 2 below. 2. Within the next 100 hours' time in service after receipt of this message, unless already accomplished, modify stabilizers, P/N 24 62001 and P/N 24 62001 31, in accordance with Section Two of Fairchild Hiller Service Bulletin FH 1100 62 6 dated 18 March 1971 or later approved revision or an equivalent modification approved by Chief, Engineering and Manufacturing Branch, Eastern Region. This amendment is effective May 19, 1971 and was effective for all recipients of the airmail letter of March 9, 1971 and amending airmail letter of March 25, 1971 upon receipt. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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