SAIB NM-06-71 —

1 SPECIAL AIRWORTHINESS INFORMATION BULLETIN

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

NM-06-71 September 26, 2006 http://www.faa.gov/aircraft/safety/alerts/SAIB This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin (SAIB) advises you, owners and operators of certain Fokker Model F.28 Mk 0100 aircraft of service information to increase the strength of the passenger service unit, speaker, oxygen and blind panel attachments.

Background

The Civil Aviation Authority – Netherlands, airworthiness authority for the Netherlands, issued AD NL-2005-005, dated April 29, 2005 (attached). The Netherlands advises that a Fokker Model F.28 Mk 0100 airplane experienced an off airport emergency landing. As a result of this event, the suspended rails of the passenger service unit, speaker, oxygen and blind panel assemblies, came loose from their brackets on the cabin air ducts. Although the rail suspension of the original baseline interior can withstand the inertia force static strengths as required by FAR 25.561(b)(3), inertia forces which exceed those of the certification requirements of a dynamic deformation mechanism could result in further incidents of panel detachments. Recommendation

We recommend that if you own or operate the Fokker F.28 Mk 0100 aircraft, serial numbers 11244 through 11486, 11488 through 11491, 11496, 11498 through 11502, 11504 through 11507 and 11511 through 11527, except those modified per Fokker Service Bulletin F100-25- 070 (Jetline Interior configuration), to install two additional cable ties to each attachment bracket of the passenger service unit, speaker, oxygen, and blind panel assemblies in accordance with Fokker Services service bulletin F100-25-103 dated March 15, 2005.

For Further Information Contact

Tom Rodriguez, Aerospace Engineer, ANM-116 Transport Airplane Directorate, International Branch, 1601 Lind Avenue SW, Renton WA, 98057; phone: (425) 227-1137; email: [email protected]

For Service Bulletin Information Contact

Fokker Services B.V., Technical Services Dept., P.O. Box 231, 2150 AE Nieuw-Vennep, The Netherlands

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EQUlPMENTlFURNlSHlNG - PASSENGER SERVICE UNIT, SPEAKER, OXYGEN & BLIND PANELS ATTACHMENTS - MODIFICATION , ., ~ n n & 8) of rne State of Desgn for ;ne affcctea prod,rt(\) w th'referenie to 21A 33 (2 and '0). and' . has oeen appro.ea -naer FASA reference h-rnoer 2005-387: aeted Aprt29. 2009 Applicability_; Fokker Aircraft B.V. F.28 Mk.O1OO aircraft, serial numbers 11244 through 11486. 11488 through 11491, 11496,1149B through 11502,11504 through 11507 and 11511 through 11527, except those modified per Fokker SB F100-25-070 (Jetline Interior configuration). Rsi3s0n; Due to fuel starvation, a Fokker 100 (F.28 Mk.O1OO) experienced a double engine flame-out and the flight crew had to execute an off-airport emergency landing. During touchdown on a grass field, the high inertia forces caused the rails, from which the Passenger Service Unit (PSU), speaker, oxygen and blind panel assemblies are suspended, to come loose from their brackets on the cabin air ducts and to fall down on the backrest of the passenger seats throughout almost the entire cabin. Fortunately, no passengers were injured and there is no indication that the subsequent evacuation was seriously hampered by the loose rail/panel assemblies. Although the rail suspension of the original baseline interior can withstand the inertia force static strengths as required by CS (JAR) 25.561 (b)(3), inertia forces which exceed those of the certification requirements or a dynamic deformation mechanism could result in further incidents of panel detachments. Combined with an emergency evacuation under fire/smoke conditions, this could evolve into a catastrophic event. Since a potentially unsafe condition has been identified that may exist or develop on aircraft of this type design, this Airworthiness Directive requires the installation of two additional cable ties to each attachment bracket of Passenger Service Unit-, speaker-, oxygen- and blind panel assemblies. Effective d& May 15, 2005 f & . m ~ t ~ ~ A c t ~ ~ ~ i a a ~

Required as indicated, unless accomplished previously. Within the next two (2) years after the effective date of this directive, install two additional cable ties to each attachment bracket of Passenger Service Unit-, speaker-, oxygen- and blind panel assemblies in accordance with Part 2 -of Fokker Services SBFl00-25-103 dated March 15, 2005 or a later CAA-NL approved revision. Refweam Publication($); Fokker Services SBF100-25-070 R1 Fokker Services SBF100-25-103

page 2 of 2 AD Nr. NL-2005-005 1 Remarks : I I - Operators of the affected aircraft may obtain copies of the referenced service information upon request directly from Fokker Services B.V., Technical Services Dept.. P.O.Box 231.2150 AE Nieuw-Vennep. The Netherlands; telephone (31) 252-627-350; facsimile (31) 252-627-211: e-mail t e c h n i c ~ I r . e r Y i r e s . f o k k e c s e ~ ~ l c ~ ~ . ~ o m or can be downloaded from -&am. - Compliance with thir diredive must be recorded in the proper Aircraft Log Book($). Addrerr inquiries concerning thir AD to : Civil Aviation Authority, Aircraft Division. Section C&D. P.O. Box 575. 2130 AN Hoofddorp. The Netherlands; telephone +31-23-566-3155; facsimile +31-23-566-3006; !-mail Inta,Re&aBmd.