TBL 7-1-12 TWIP-Equipped Airports Airport Identifier Airport Identifier Andrews AFB, MD KADW Harry Reid Intl Airport KLAS Hartsfield-Jackson Atlanta Intl Airport KATL LaGuardia Airport KLGA Nashville Intl Airport KBNA Kansas City Intl Airport KMCI Logan Intl Airport KBOS Orlando Intl Airport KMCO Baltimore/Washington Intl Airport KBWI Midway Intl Airport KMDW Hopkins Intl Airport KCLE Memphis Intl Airport KMEM Charlotte/Douglas Intl Airport KCLT Miami Intl Airport KMIA Port Columbus Intl Airport KCMH General Mitchell Intl Airport KMKE Cincinnati/Northern Kentucky Intl Airport KCVG Minneapolis St. Paul Intl Airport KMSP Dallas Love Field Airport KDAL KMSY James M. Cox Intl Airport KDAY Louis Armstrong New Orleans Intl Airport Ronald Reagan Washington National Airport KDCA Will Rogers World Airport KOKC O"Hare Intl Airport KORD Denver Intl Airport KDEN Palm Beach Intl Airport KPBI Dallas-Fort Worth Intl Airport KDFW Philadelphia Intl Airport KPHL Detroit Metro Wayne County Airport KDTW Phoenix Sky Harbor Intl Airport KPHX Newark Liberty Intl Airport KEWR Pittsburgh Intl Airport KPIT Fort Lauderdale-Hollywood Intl Airport KFLL Raleigh-Durham Intl Airport KRDU William P. Hobby Airport KHOU Louisville Intl Airport KSDF Washington Dulles Intl Airport KIAD Salt Lake City Intl Airport KSLC George Bush Intercontinental Airport KIAH Lambert-St. Louis Intl Airport KSTL Wichita Mid-Continent Airport KICT Tampa Intl Airport KTPA Indianapolis Intl Airport KIND Tulsa Intl Airport KTUL John F. Kennedy Intl Airport KJFK Luis Munoz Marin Intl Airport TJSJ 7-1-25. PIREPs Relating to Volcanic Ash Activity a. Volcanic eruptions which send ash into the upper atmosphere occur somewhere around the world several times each year. Flying into a volcanic ash cloud can be extremely dangerous. At least two B747s have lost all power in all four engines after such an encounter. Regardless of the type aircraft, some damage is almost certain to ensue after an encounter with a volcanic ash cloud. Additionally, studies have shown that volcanic eruptions are the only significant source of large quantities of sulphur dioxide (SO2) gas at jet-cruising altitudes. Therefore, the detection and subsequent reporting of SO2 is of significant importance. Although SO2 is colorless, its presence in the atmosphere should be suspected when a sulphur-like or rotten egg odor is present throughout the cabin. b. While some volcanoes in the U.S. are monitored, many in remote areas are not. These unmonitored volcanoes may erupt without prior warning to the aviation community. A pilot observing a volcanic eruption who has not had previous notification of it may be the only witness to the eruption. Pilots are strongly encouraged to transmit a PIREP regarding volcanic eruptions and any observed volcanic ash clouds or detection of sulphur dioxide (SO2) gas associated with volcanic activity. Meteorology 7-1-61