Correction corrections?
Okay, here is a list so far that I'm working with. If anyone has any useful input, lemme know.
Pg.4 What if (sic) the formula for lift?
The variables should be multiplied.
Pg. 6 What is direct lift control?
DLC allows for a constant pitch attitude on approach while varying lift with spoilers.
Pg. 8 Describe the drag curve on a jet. . . . where an increase in thrust has a greater drag penalty for speed gained, thus with a net result of losing speed for a given increase in thrust.
It is unclear what is intended, but drag decreases with an increase in speed when below VIMD. Also, increased thrust does not cause a loss of speed and thrust does not incur a “drag penalty.”
Pg. 9 Figure 1.6 Total drag curve
It appears the jet stalls at about 1.2Vs.
Pg. 11 How do you prevent span-wise airflow on a wing, especially on a swept wing?
Vortex generators do not serve this purpose. Wing fences are not perpendicular to the leading edge.
Pg. 11 What are winglets and how do they work?
The whole paragraph is puzzling, especially “at different points.”
Pg. 13 What are the reasons/effects of keeping a CG inside its limits?
The horizontal tail provides pitching moment, not turning moment.
Pg. 17 What causes center of gravity movement?
High speed does not shift mass.
Pg. 18 What is positive/negative G force(s)?
The definitions are inadequate in regards to aviation.
Pg. 31 What is Dutch roll?
Wing stall is not a cause or a factor in Dutch Roll.
Pg. 36 What is adverse yaw?
A mention of induced drag as the cause of aileron drag might aid in this explanation.
Pg. 38 What is aileron reversal?
High air loads/forces sentence is redundant. In the explanation, it is not entirely clear that the wingtip itself twists. The note “which a down-going aileron can do” is unnecessary.
Pg. 39 How is spoiler blow-back prevented?
“Spoilers are designed not to. . .” might be insufficient.
Pg. 60 How does crosswind affect the critical engine?
With the exception of some aircraft with considerable keel in front of the landing gear (e.g. MD-80), the upwind, outboard engine would be the critical engine. Mr. Barstow seems confused on weathervaning tendencies.
Pg. 67 What are the advantages of a wide-chord fan engine?
The chord of the blade is the width, not the length of the blade. The rest of the explanation seems predicated on this false premise.
Pgs. 69-71 References to SFC fail to mention low temperature’s impact on SFC.
Pg. 74 Describe a hung start and its causes. . .
There are numerous causes, but early starter cut-out is a common cause.
Pg. 82 Is there a critical engine on a jet/gas turbine aircraft?
Turbine engines do not have “opposing revolution.” Turboprop aircraft have gas turbine engines and they do have a critical engine. Engine governors have no place in this topic.
Pg. 94 Describe GPS.
There are currently 30 GPS satellites in orbit, 24 of which are the minimum constellation.
Pg. 117 Why do you need to calculate the actual height of a pressure altitude?
Density altitude is generally used in performance calculations, not actual altitude.
Pg. 122 Describe LSS.
LSS is 661.5 knots (not knots per hour).
Pg. 123 What is the main influence on Mach number?
The given formula is incorrect, see page 122.
Pg. 131 Give the definitions of the following altimeter subscale settings? (sic)
While Mr. Barstow is technically correct, in common usage QNE is the ISA standard 1013.2 hPa/29.92in Hg.
Pg. 149 What does HUGS stand for?
HUGS allows for Cat II approaches to CAT I runways with several limitations.
Pg. 175 What is the purpose of cockpit window heating?
While some windows are certified for bird-strike protection only with the window heat on, it is wrong to state that the only purpose is bird-strike protection – obviously anti-ice is an important function, as well.
Pg. 179 What are an aircraft’s typical sources of ac power?
Rotary inverters do not produce wild-frequency ac.
Pg. 187 Figure 7.2 Emergency Distance
ED=TORA + Stopway, not clearway.
Pg. 188 Explain balanced/unbalanced field.
The accuracy of the note about Airbus and quick reference tables is doubtful.
Pg. 193 How would you teach a student about VMCG/A?
Yawing moment is dependant on the arm of the engine, not the nose.
Pg. 195 If you had an engine failure between V1 and VR . . .
The failure of an upwind engine would compound the weathervaning.
Pg. 211 How is range increased when flying into a headwind?
A headwind does not increase an aircraft’s range over a no-wind or tailwind situation. The range may be maximized by flying a higher indicated airspeed over the max-range airspeed for a no-wind situation.
Pg. 216 How does aircraft weight affect landing performance?
Kinetic energy = ½ m V2
Pg. 222 et alibi, Mr. Barstow confuses insulation for insolation .
Pg. 232 What is virga?
Virga is not an indication of a temperature inversion.
Pg. 297 On an instrument landing system (ILS) approach, when can you descend on the glide path? You have captured the localizer between +/- 5 degrees Celsius?
Delete “Celsius.”
Pg. 298 What are the Cat I, II, and III ILS ICAO approach limits?
Cat IIIb DH less than 50 ft (down to 50 ft)
The “down to 50 ft” is incorrect.