AD/G1159/44 Adel Wiggins Floor Heater Pad System 11/2005
DM
Applicability: Gulfstream Aerospace Corporation
model/series aeroplanes as follows:
Requirement:
1. Perform an inspection to determine if an Adel Wiggins floor
heater pad system is installed. A review of aeroplane maintenance
records is acceptable in lieu of this inspection if the presence of
Adel Wiggins floor heater pads can be conclusively determined from
that review.
2. If an Adel Wiggins floor heater pad system is found during
the Requirement 1 inspection/determination - deactivate the Adel
Wiggins floor heater pad system in accordance with the
Accomplishment Instructions of the applicable Alert Customer
Bulletin (ACB) identified below, unless Requirement 3 applies.
3. For any aeroplane that is found to have an Adel Wiggins floor
heater pad system installed but is not listed in the effectivity
block of Gulfstream Drawing 1159SB50018, deactivate the Adel
Wiggins floor heater pad system in accordance with a method
approved by the Manager, Atlanta Aircraft Certification Office
(ACO), FAA.
Model
|
Series
|
G-IV |
All
|
GIV-X |
Serial Numbers 4001 through 4023 inclusive
|
GV |
All
|
GV-SP |
Serial Numbers 5001 through 5075 inclusive
|
Note 1: For details of deactivation method
approved by the Atlanta FAA ACO contact Gulfstream Customer Support
on +1 912-965-4178 for assistance.
Note 2: FAA AD 2005-16-14 Amdt 39-14220
refers.
Model/Series
|
ACB, including Gulfstream
drawing 1159SB50018
|
Date
|
G-IV |
G-IV ACB 33 |
13 June 2005 |
GV |
GV ACB 22 |
13 June 2005 |
G-IV (G300) |
G300 ACB 33 |
13 June 2005 |
GIV-X (G350 |
G350 ACB 2 |
13 June 2005 |
G-IV (G400) |
G400 ACB 33 |
13 June 2005 |
GIV-X (G450) |
G450 ACB 2 |
13 June 2005 |
GV-SP (G500) |
G500 ACB 3 |
13 June 2005 |
GV-SP (G550) |
G550 ACB 3 |
13 June 2005 |
Compliance: For Requirements 1, 2 and 3 -
Within 25 flight hours or 30 days after the effective date of this
Directive, whichever occurs first.
This Airworthiness Directive becomes effective on 2 September
2005.
Background:
The United States Federal aviation Administration has received a
report of an incident in which an Adel Wiggins floor heater pad
system short-circuited on a Gulfstream GV-SP series aeroplane. The
short-circuit was discovered after an odour of burning was detected
emanating from the floor of the cabin. The short-circuit resulted
in localized damage to the floorboard and carpet. No circuit
breakers tripped as a result of the short-circuiting. This
condition, if not corrected, could result in a fire in the
aeroplane cabin.
Adel Wiggins floor heater pad systems may also be installed on
all Gulfstream Model G-IV and G-V series aeroplanes and certain
Gulfstream Model GIV-X series aeroplanes. Therefore, those models
may be subject to the unsafe condition revealed on Model
GV-SP series aeroplanes.
This Directive requires a one-time inspection to determine if an
Adel Wiggins floor heater pad system is installed and deactivation
of the floor heater pad system if it is installed.