Airworthiness Directive · Amendment 39-14731 · Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 Series Airplanes
Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 Series Airplanes
This AD applies to Bombardier Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes; certificated in any category; serial numbers 003 through 407 inclusive, 409 through 412 inclusive, and 414 through 433 inclusive; excluding those with Hunting interiors.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 series airplanes. This AD requires repetitive inspections of the fluorescent light tube assemblies of the cabin, lavatory, and sidewall, and corrective actions if necessary. This AD also provides for optional terminating action for the repetitive inspections. This AD results from reports of overheating due to arcing between the fluorescent tube pins and the lamp holder contacts. The tubes had not been properly seated during installation. We are issuing this AD to prevent fumes, traces of visible smoke, and fire at the fluorescent light tube assembly.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 6,300 flight hours or 36 months after the effective date of this AD, whichever occurs first: Perform detailed inspections to detect signs of arcing of the fluorescent tube assemblies of the cabin, sidewalls, and lavatory, in accordance with the applicable temporary revision (TR) of the applicable maintenance program manual (MPM) identified in Table 1 of this AD. If any sign of arcing is found, repair before further flight using a method approved by either the Manager, New York Aircraft Certification Office (ACO), FAA; or Transport Canada Civil Aviation (or its delegated agent). Chapter 33-20-00 of the applicable airplane maintenance manual is one approved method. Repeat the inspection at intervals not to exceed 6,300 flight hours, until all ballast part numbers (P/Ns) BA08006-1 or BA08006-28-1 have been replaced in accordance with paragraph (g) of this AD.
| Inspect the fluorescent tube assemblies of the— | In accordance with task— | of de Havilland TR— | To the de Havilland DASH 8 series— | For model— |
|---|---|---|---|---|
| Cabin | 3320/01 | MRB-146, dated August 31, 2004 | 100 MPM PSM 1-8-7 | DHC-8-102, -103, and -106 airplanes. |
| 3320/01 | MRB 2-24, dated August 31, 2004 | 200 MPM PSM 1-82-7 | DHC-8-201 and -202 airplanes. | |
| 3320/01 | MRB 3-155, dated August 31, 2004 | 300 MPM PSM 1-83-7 | DHC-8-301, -311, and -315 airplanes. | |
| Lavatory | 3320/03 | MRB-147, dated May 3, 2005 | 100 MPM PSM 1-8-7 | DHC-8-102, -103, -106 airplanes. |
| 3320/03 | MRB 2-25, dated May 3, 2005 | 200 MPM PSM 1-82-7 | DHC-8-201 and -202 airplanes. | |
| 3320/03 | MRB 3-156, dated May 3, 2005 | 300 MPM PSM 1-83-7 | DHC-8-301, -311, and -315 airplanes. | |
| Sidewall | 3320/02 | MRB-147, dated May 3, 2005 | 100 MPM PSM 1-8-7 | DHC-8-102, -103, and -106 airplanes. |
| 3320/02 | MRB 2-25, dated May 3, 2005 | 200 MPM PSM 1-82-7 | DHC-8-201 and -202 airplanes. | |
| 3320/02 | MRB 3-156, dated May 3, 2005 | 300 MPM PSM 1-83-7 | DHC-8-301, -311, and -315 airplanes. |
Note 1: For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.”
The repetitive inspections required by this AD may be terminated if all ballasts installed on the airplane have P/N BR9000-21, installed in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 8-33-51, Revision ‘A,’ dated April 20, 2005 (to replace ballast P/N BA08006-1), or 8-33-52, dated April 15, 2005 (to replace ballast P/N BA08006-28-1). Ballasts installed before the effective date of this AD are also acceptable if done in accordance with Bombardier Service Bulletin 8-33-51, dated August 16, 2002.
As of the effective date of this AD: No person may install a ballast P/N BA08006-1 or BA08006-28-1 on any airplane.
