Carnival shuttle
Carnival shuttle  
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Pattern type  Oscillator  

Number of cells  43  
Bounding box  24×7  
Period  12  
Mod  6  
Heat  38  
Volatility  0.91  
Strict volatility  0.27  
Discovered by  Robert Wainwright  
Year of discovery  1984  
 
 

Carnival shuttle is a period 12 oscillator that was found by Robert Wainwright in September 1984 (using middleweight emulators at the end, instead of the monograms shown here). It was used to create the first known nontrivial period 24 oscillator, 186P24.
The shuttle itself is a reaction between two ttetrominos. Its stability requires the suppression of one birth per period at both ends of the shuttle.
There are many ways to stabilise adjacent shuttles:
(click above to open LifeViewer) RLE: here Plaintext: here 
Shuttles can also hassle a beehivetraffic lightloaf component. The shuttle can be stabilised by monograms, middleweight emulators and Tnosed p4s. The Blocked p43 gives the same spark, and thus can be used as a stabilizer too.
Without sparkers on the ends, a spatial period 12 wick can be constructed. A finite version requires the addition of sparker oscillators as caps.
External links
 Carnival shuttle at the Life Lexicon
 Carnival shuttle at Adam P. Goucher's Catagolue
 Patterns
 Oscillators with 43 cells
 Patterns with 43 cells
 Patterns found by Robert Wainwright
 Patterns found in 1984
 Oscillators
 Periodic objects with minimum population 43
 Oscillators with period 12
 Oscillators with mod 6
 Oscillators with heat 38
 Oscillators with volatility 0.91
 Oscillators with strict volatility 0.27
 Patterns with bilateral orthogonal symmetry
 Flipping oscillators