The Society of Aviation History organized a visit to Salinas to the facility of Airmotive Specialties. Owned and run by Dave Teeters, Aviation Specialties provides a number of services but the thing that brings them most attention is the restoration of warbirds with a strong focus on P-51 Mustangs. During our visit, there were seven Mustangs in the hangar in various states of restoration. There were some other types too as well as some more commonplace types undergoing maintenance.
Dave has spent his life in this business having started working for his Dad before setting up on his own. He supplies parts to his Dad’s business and vice versa as they both operate in the same field. Dave has really committed to the processes and capabilities needed to restore these vintage aircraft. His team is one that he has trained and many of his staff have been with him for years. He has also invested in technology. So many parts for these aircraft are hand crafted but Dave has acquired numerically controlled machines to assist in producing a large number of components. These machines are also capable of digitizing the outline of existing components to allow him to reproduce them as needed.
The investment in these machines is substantial but the pay off comes in how quickly he can produce replacement parts once the process is done. Hand crafting these parts is an intensive business and, when sufficient are needed, the business case is straightforward. Even so, there are still many pieces that require the hand skills that are in short supply and are becoming rarer. Dave maintains capabilities with many old tools and techniques in order to make sure that they can always provide what the customers need.
The hangar was full of interesting projects in various states. Some were disassembled completely with rework on fuselages and wings plus various subassemblies. Others were fully complete and were just in for ongoing maintenance. A great looking Beech 18 was at the front of the hangar along with a P-51 due to be picked up by its owner. A couple of Robinson R44s were also parked in with a JetRanger – one of the R44s flew off later in the day.
Dave provided great access to our visit and was exceedingly generous with his time. He explained exactly how they work and answered any questions the group had for him. The hangar has some nice facilities for customers but, while they were very comfortable, the contents of the working area were of most interest to us and Dave gave us freedom to wander as we wished. It was a great time. Many thanks Dave.
The Boeing 747-8 has not been a terribly successful program. Boeing decided to update the 747 family with new engines and revisions to the wing along with a stretch to the fuselage. The resulting jet was delayed by its own and other program issues and it came around at a time when there were few passenger airlines interested and the freighter market was taking a kicking. The result has been anemic sales and a production rate that has steadily reduced as a result of the low demand. However, from a technical point of view, it is a nice upgrade.
The wing came in for a lot of attention and was significantly redesigned. The most conspicuous change is the introduction of the swept tips common to many Boeing designs these days. Less obvious is that the flap system was completely redesigned. The original 747 flaps, carried through on the 747-400 are very complex. Sections are triple slotted. The Boeing aerodynamicists came up with a single slot design to replace this which apparently has good performance but I imagine is a lot simpler to make and maintain. Only from the rear on approach can you see the difference. These shots compare a 747-400 from Air New Zealand with a Korean Air 747-8 and you can see for yourself how much simpler the new design is.
