Cracked Stabilizer page
Below is an email message from Tom Ferraro regarding a crack stabilizer they found while inspecting a 1978 Grumman Tiger.
The pictures are from their investigation
From: Tom Ferraro [email@example.com]
To: firstname.lastname@example.org; email@example.com
Subject: SAIB for Tiger N28745
Gentlemen.... Attached are a few pictures that show the damage we found
while inspecting our 1978 Grumman Tiger per SAIB CE-04-34. Based on
conversations with both of you, here's a brief description of the aircraft
and some of the history via the logs.
Serial Number AA5B0789
TT 1902 hours
Nose gear replaced, prop strike and left wing tip repaired in 1978
Left wing repaired at rib 6-7 aand 7-8 in 1984. No info as to what happened
or why the repair was needed.
Looks like recent minor hangar rash "ding" in right elevator trailing edge
Noticed the tie down ring had been reinforced with a patch riveted to bottom
of fuse. No log entry.
Tie down ring itself shows not signs of damage - may have been replaced with
no log entry.
Top horizontal bulkhead in rear of fuse had been patched due to cracking at
left rear corner.
Top tray had also been wrinkled from left rear corner to the inspection hole
causing crack under the flange at the hole. This could not be seen until the
rubber edging around the hole was removed.
Lower stiffner was wrinkled and cracked on left side (#7 in SAIB drawing)
Lower stiffner was cracked on right side (#6)
Both side angles were cracked on the top rear (#1 and #2).
Significant wrinkle on the right side (#1) under the forward spar
Minor wrinkle on the left side under the forward spar
Close inspection of the rest of the rear end of the aircraft and surfaces
We have purchased the repair kit and new parts from Fletchair
Our plan is to rivet and bond the new Angles and lower stiffner to the fuse
(per Procedure w kit 125A)
We have patched the upper bulkhead tray to repair and stiffen the rear area
where it was wrinkled and cracked.
I appreciate the information you both have been able to provide us with the
inspection and repair. We should have it back in the air in the near future.
I hope these pictures help you with your research on this subject. Please
feel free to contact us if you need any more information etc. Thanks again!