The 29-year-old who was appointed in April 2013 said on his officially website that the news about his sacking was disappointing and frustrating especially when logistic and preparations were not in his control.
"Following the difficulties, I had requested urgent meetings with the SLFA and Ministry of Sports to again ask them to try to rectify the situation with regards to preparation time before the upcoming Cameroon games, as it is simply not acceptable for a Top 50 international team to be arriving in a country 24 hours before a game."
McKinstry further revealed that in recent games, training camps have been impacted due to travel and logistics issues as players were not arriving in country in good time adding that during the Swaziland away qualifier in May, almost the entire squad arrived just over 24 hrs before the game.
For the Cote d'Ivoire match, he said five of the players arrived less than 24 hours before the game and for the DR Congo match, the squad spent a full 2 days travelling - arriving at their destination only 36 hrs before the game.
The Craig Bellamy Academy coach said: "We now have considerable talent in our squad. However, talent and tactics could only ever take us so far. Access to sufficient preparation time in training camps would be vital to ensure we were match ready and playing as one team. The simple truth has always been that lack of preparation time would severely limit our ability to progress in AFCON 2015, and to demonstrate the full potential of the Leone Stars."
Decision to sack McKinstry and his technical team comes on the back of failing to secure a single point against Cote d'Ivoire and DR Congo in the AFCON qualifiers.