AD 90-03-05
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dassault Aviation | Mystere-Falcon 50 | Airworthiness Directives; AVIONS MARCEL DASSAULT-BREGUET AVIATION Model Mystere Falcon 50 and 900 Series Airplanes |
| aircraft | Dassault Aviation | Mystere-Falcon 900 | Airworthiness Directives; AVIONS MARCEL DASSAULT-BREGUET AVIATION Model Mystere Falcon 50 and 900 Series Airplanes |
Unsafe Condition
Inability to manually open the main landing gear (MLG) door for MLG emergency extension due to failure of the MLG emergency release system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 30 days after the effective date, verify the MLG emergency release system with a functional test per service bulletin. If door release fails, replace the control bell crank with an adjustable one before further flight. If successful, either replace the bell crank within 180 days or 1,300 hours time-in-service or repeat the test every 1,300 hours.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD, and subsequent actions as specified (180 days/1,300 hours time-in-service or repeat tests every 1,300 hours).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AVIONS MARCEL DASSAULT-BREGUET AVIATION Model Mystere Falcon 50 and 900 series airplanes listed in AMD-BA Alert Service Bulletins F50-A212 and F900-A65 dated July 25, 1989.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
MLG Emergency Release System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_90-03-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 90-03-05 Document Type: AD Final Rules Docket Number: 89-NM-193-AD Subject Heading: Airworthiness Directives; AVIONS MARCEL DASSAULT-BREGUET AVIATION Model Mystere Falcon 50 and 900 Se...Show more Subject: MLG Emergency Release System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/23/1990 Make: Dassault Aviation Model: Mystere-Falcon 50 | Mystere-Falcon 900 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 90-03-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-193-AD AMENDMENT: 39-6480 AD NUMBER: 90-03-05 SUBJECT HEADING: Airworthiness Directives; AVIONS MARCEL DASSAULT-BREGUET AVIATION Model Mystere Falcon 50 and 900 Series Airplanes ACTION: Final rule SUMMARY: DATES: Effective February 23, 1990. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 90-03-05 AVIONS MARCEL DASSAULT-BREGUET AVIATION (AMD-BA): Amendment 39-6480. Docket No. 89-NM-193-AD. Applicability: All Model Mystere Falcon 50 and 900 series airplanes, as listed in AMD-BA Alert Service Bulletins F50-A212 (F50-A32-19) and F900-A65 (F900-A32-6), both dated July 25, 1989, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent inability to manually open the main landing gear (MLG) door for MLG emergency extension, accomplish the following: A. Within 30 days after the effective date of this AD, verify the integrity of the MLG emergency release system by accomplishing a functional test in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989. 1. If door release does not occur, prior to further flight, replace the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with the appropriate service bulletin. 2. If the door releases normally, accomplish one of the following: a. Within 180 days or 1,300 hours time-in-service after the effective date of this AD, whichever occurs later, replace the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989; or b. At intervals not to exceed 1,300 hours time-in-service, repeat the functional test. B. Replacement of the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989, constitutes terminating action for the functional tests required by paragraph A., above. C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM- 113, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113. D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Falcon Jet Corporation, Customer Support Department, Teterboro Airport, Teterboro, New Jersey 07608. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6480, AD 90-03-05) becomes effective on February 23, 1990. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_90-03-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 90-03-05 Document Type: AD Final Rules Docket Number: 89-NM-193-AD Subject Heading: Airworthiness Directives; AVIONS MARCEL DASSAULT-BREGUET AVIATION Model Mystere Falcon 50 and 900 Se...Show more Subject: MLG Emergency Release System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/23/1990 Make: Dassault Aviation Model: Mystere-Falcon 50 | Mystere-Falcon 900 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: 90-03-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-193-AD AMENDMENT: 39-6480 AD NUMBER: 90-03-05 SUBJECT HEADING: Airworthiness Directives; AVIONS MARCEL DASSAULT-BREGUET AVIATION Model Mystere Falcon 50 and 900 Series Airplanes ACTION: Final rule SUMMARY: DATES: Effective February 23, 1990. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 90-03-05 AVIONS MARCEL DASSAULT-BREGUET AVIATION (AMD-BA): Amendment 39-6480. Docket No. 89-NM-193-AD. Applicability: All Model Mystere Falcon 50 and 900 series airplanes, as listed in AMD-BA Alert Service Bulletins F50-A212 (F50-A32-19) and F900-A65 (F900-A32-6), both dated July 25, 1989, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent inability to manually open the main landing gear (MLG) door for MLG emergency extension, accomplish the following: A. Within 30 days after the effective date of this AD, verify the integrity of the MLG emergency release system by accomplishing a functional test in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989. 1. If door release does not occur, prior to further flight, replace the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with the appropriate service bulletin. 2. If the door releases normally, accomplish one of the following: a. Within 180 days or 1,300 hours time-in-service after the effective date of this AD, whichever occurs later, replace the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989; or b. At intervals not to exceed 1,300 hours time-in-service, repeat the functional test. B. Replacement of the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989, constitutes terminating action for the functional tests required by paragraph A., above. C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM- 113, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113. D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Falcon Jet Corporation, Customer Support Department, Teterboro Airport, Teterboro, New Jersey 07608. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6480, AD 90-03-05) becomes effective on February 23, 1990. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.