Moody’s Investors Service (“Moody’s”) affirmed all of its ratings of TransDigm Inc., including the B1 Corporate Family Rating (CFR), the B1-PD Probability of Default, the Ba3 senior secured and the B3 senior subordinated. Moody’s also affirmed the B3 rating for the senior subordinated notes of TransDigm Holdings UK plc. The rating outlook on both entities was changed to stable from negative. The stable outlook recognizes TransDigm’s earnings growth over the last few quarters and the resultant reduction in leverage as well as Moody’s expectations of favorable execution on the Esterline acquisition.