Array-based visualization techniques have been used for several decades to explore jetnoise properties such as source strength, size, and distribution. However, near-field acoustical holography (NAH) has only recently been utilized to study jet noise, and experiments are typically performed on laboratory jets in controlled environments. In this work, NAH was applied to measurements of a full-scale, installed jet engine. This paper outlines three different NAH methods applied to the data and addresses practical problems faced when NAH is performed on a full-scale jet. Holographic reconstruction of the jet-noise field at low frequencies shows phenomena consistent with radiation from large-scale turbulence structures. A comparison of reconstructed levels using both planar and cylindrical NAH methods suggests that cylindrical NAH outperforms planar NAH for jet noise sources.