PST Composite Reaction ARF, Airplane Directive No. 2
05-05-2009, 11:31 PM
#1
Senior Member
Thread Starter
Join Date: Jul 2002
Location: Bangkok, THAILAND
Posts: 726
Likes: 0
Received 0 Likes
on
0 Posts
PST Composite Reaction ARF, Airplane Directive No. 2
Subject: PST Composite Reaction ARF, Model Airplane Directive No. 2
One of customer flown Reaction ARF exhibited a warping of right wing panel upper skin above the landing gear area. The warping did not make any noticeable change in flight performance and was noticed after landing. After inspection of the failed wing panel, we found separation between the W3 rib and upper skin surface due to poor glue bonding. As a result, we would like all owners of the Reaction ARF to inspect the bonding and perform the following:
1. Remove the wing panel and turn it upside down on a flat surface. Extend the landing gear and check the glue bonding between the W2, W3, W4 ribs and the upper wing skin. If the bonding is poor, use epoxy or Hysol to rebond the area. Please note that the W4 rib is not easily reached from this position but some glue can be applied with long stick. However, W4 rib can be reached from the aileron servo access hatch. Please see attached pictures.
2. Remove the aileron servo access hatch and inspect the W4 and W5 ribs and wing skin bonding. If the bonding is poor, use epoxy or Hysol to rebond the area. Please see attached pictures.
Although we have not seen this wing failure on other Reaction ARF, we recommend that you perform the above procedures and inspect the internal of the wing and check all visible glue contact.
Thanks and regards,
Kraivuth S.
PST Jets Thailand
One of customer flown Reaction ARF exhibited a warping of right wing panel upper skin above the landing gear area. The warping did not make any noticeable change in flight performance and was noticed after landing. After inspection of the failed wing panel, we found separation between the W3 rib and upper skin surface due to poor glue bonding. As a result, we would like all owners of the Reaction ARF to inspect the bonding and perform the following:
1. Remove the wing panel and turn it upside down on a flat surface. Extend the landing gear and check the glue bonding between the W2, W3, W4 ribs and the upper wing skin. If the bonding is poor, use epoxy or Hysol to rebond the area. Please note that the W4 rib is not easily reached from this position but some glue can be applied with long stick. However, W4 rib can be reached from the aileron servo access hatch. Please see attached pictures.
2. Remove the aileron servo access hatch and inspect the W4 and W5 ribs and wing skin bonding. If the bonding is poor, use epoxy or Hysol to rebond the area. Please see attached pictures.
Although we have not seen this wing failure on other Reaction ARF, we recommend that you perform the above procedures and inspect the internal of the wing and check all visible glue contact.
Thanks and regards,
Kraivuth S.
PST Jets Thailand
