Where is this rule written? If true (and I'm not doubting you) it runs counter to what I've been told by two separate CFIs.
That said, ~80% of my time has been with one CFI, and he's been careful to check me personally on each and every skill in the syllabus, and to note it in my logbook.
From a secondary perspective, though, does it really matter which CFI I'm flying with for simulated instrument (foggle) work? Pattern practice? Night hours? If it does, what are the requirements and limits I should be paying attention to?
§ 61.195 Flight instructor limitations and qualifications.
A
person who holds a flight instructor certificate is subject to the following limitations:
(d) Limitations on endorsements.
A flight instructor may not endorse a:
(1) Student pilot's logbook for solo flight privileges, unless
that flight instructor has—
(i) Given that student the flight training required for solo flight privileges required by this part; and
(ii) Determined that the student is prepared to conduct the flight safely under known circumstances, subject to any limitations listed in the student's logbook that the instructor considers necessary for the safety of the flight.
§ 61.87 Solo requirements for student pilots.
(a) General. A student pilot may not operate an
aircraft in solo flight unless that student has met the requirements of this section. The term “solo flight” as used in this subpart means that
flight time during which a student pilot is the sole occupant of the
aircraft or that
flight time during which the student performs the duties of a
pilot in command of a gas
balloon or an
airshiprequiring more than one pilot flight
crewmember.
(
b) Aeronautical knowledge. A student pilot must demonstrate satisfactory aeronautical knowledge on a knowledge test that meets the requirements of this paragraph:
(1) The test must address the student pilot's knowledge of—
(i) Applicable sections of parts 61 and 91 of this chapter;
(ii) Airspace rules and procedures for the
airport where the solo flight will be performed; and
(iii) Flight characteristics and operational limitations for the make and model of
aircraft to be flown.
(2)
The student's authorized instructor must—
(i)
Administer the test; and
(ii) At the conclusion of the test, review all incorrect answers with the student before authorizing that student to conduct a solo flight.
(
c) Pre-solo flight training. Prior to conducting a solo flight, a student pilot must have:
(1) Received and logged flight training for the maneuvers and procedures of this section that are appropriate to the make and model of aircraft to be flown; and
(2) Demonstrated satisfactory proficiency and safety, as judged by an
authorized instructor, on the maneuvers and procedures required by this section in the make and model of
aircraft or similar make and model of
aircraft to be flown.
(d) Maneuvers and procedures for pre-solo flight training in a single-engine airplane. A student pilot who is receiving training for a single-engine
airplanerating or privileges must receive and log
flight training for the following maneuvers and procedures:
(1) Proper flight preparation procedures, including preflight planning and preparation, powerplant operation, and
aircraft systems;
(2) Taxiing or surface operations, including runups;
(3) Takeoffs and landings, including normal and crosswind;
(4) Straight and level flight, and turns in both directions;
(5) Climbs and climbing turns;
(6)
Airport traffic patterns, including entry and departure procedures;
(7) Collision avoidance, windshear avoidance, and wake turbulence avoidance;
(8) Descents, with and without turns, using high and low drag configurations;
(9) Flight at various airspeeds from cruise to slow flight;
(10) Stall entries from various flight attitudes and power combinations with recovery initiated at the first indication of a stall, and recovery from a full stall;
(11) Emergency procedures and equipment malfunctions;
(12) Ground reference maneuvers;
(13) Approaches to a landing area with simulated engine malfunctions;
(14) Slips to a landing; and
(15) Go-arounds.