Question: For the type of aircraft that were used on flights from Daporijo airport to Guwahati and Dibrugarh, how many were in service in July 2017?

Context paragraphs:
Daporijo Airport: Daporijo Airport (IATA: DEP, ICAO: VEDZ) is located at Daporijo in the state of Arunachal Pradesh, India.  Daporijo used to have scheduled services in the 1980s and early 1990s from Vayudoot.  The airport had flights to Guwahati and Dibrugarh on Dornier Do 228 aircraft.  Currently, there is no scheduled commercial air service to the airport, although the airport is used by the Indian Army.  The Airports Authority of India (AAI) plans to develop the airport for operation of ATR-42/ATR-72 type of aircraft.

Gazipaşa Airport: Gazipaşa-Alanya Airport (IATA: GZP, ICAO: LTFG) is an airport in service in the Gazipaşa, Anamur, Alanya, Kargıcak, Kestel, Payallar, Avsallar, Okurcalar, Kızılağaç and Side areas of the Antalya Province in Turkey.  The airport opened for domestic flights in July 2010 with daily flights from Istanbul with Bora Jet.  International flights began in the 2011 holiday season, with flights from Amsterdam.  The new airport is only 30 minutes by road from Alanya compared to a travel time of two hours between Alanya and Antalya Airport, which was previously the nearest airport, 120 km away.

Scoot: Scoot Tigerair Pte Ltd. (operating as Scoot) is a Singaporean low-cost long-haul airline owned by Singapore Airlines through its subsidiary Budget Aviation Holdings.  It launched flights in June 2012 on medium and long-haul routes from Singapore, predominantly to China and India.  Initially, Scoot's fleet consisted of Boeing 777 aircraft obtained from Singapore Airlines.  The airline began to transition its fleet to Boeing 787 Dreamliner aircraft from 2015.  On 25 July 2017, Tigerair was officially merged into Scoot using Tigerair's air operator's certificate (AOC) but retaining the 'Scoot' brand.  With the change of AOC, the airline's IATA code was changed from TZ to TR, previously used by Tigerair.  Its head office is at Singapore Changi Airport.

Jet Airways: Jet Airways (Hindi: जेट एयरवेज , "Jet Eyaravej") is a major Indian international airline based in Mumbai.  In July 2017, it was the second largest airline in India after IndiGo with an 18.2% passenger market share.  It operates over 300 flights daily to 68 destinations worldwide from its main hub at Chhatrapati Shivaji International Airport and secondary hubs at Amsterdam Airport Schiphol, Chennai International Airport, Indira Gandhi International Airport, Kempegowda International Airport and Netaji Subhas Chandra Bose International Airport.

Mysore Airport: Mysore Airport (IATA: MYQ, ICAO: VOMY) , also known as the Mandakalli airport, is an airport serving Mysore, a city in the Indian state of Karnataka.  It is located near the village of Mandakalli, 10 km south of the city, and is owned and operated by the Airports Authority of India (AAI).  The airport's history dates to the 1940s, when it was constructed by the Kingdom of Mysore.  Passenger service, training flights of the Indian Air Force, and other operations took place at Mysore Airport during its first several decades.  A gap in scheduled flights lasted from 1990 to 2010; Kingfisher Airlines touched down at the airport following extensive renovations by the AAI.  Airlines have encountered difficulties maintaining service at Mysore.  Nevertheless, regional carrier TruJet inaugurated flights from Chennai in September 2017.

United p.s.: United p.s. is a premium service offered by United Airlines on flights between Newark Liberty International Airport and Los Angeles International Airport and San Francisco International Airport, as well as between Boston Logan International Airport and San Francisco International Airport.  The fleet consists of specially configured Boeing 757-200 aircraft with three classes of service: United Business, United Economy Plus, and United Economy.  Each class of service includes certain amenities not offered on regular flights.

Surf Air: Surf Air is a California-based commuter airline that offers unlimited flight service for a fixed monthly fee.  It charges $1,950 per month plus a $1,000 signup fee.  The company uses Pilatus PC-12 aircraft.  Sudhin Shahani is the CEO.  The airline's inaugural service in early 2013 offered West Coast flights between Silicon Valley (San Carlos Airport) and the Los Angeles area (Burbank Airport).  It added Los Angeles area service to Santa Barbara Airport in July 2013 and Hawthorne Municipal Airport in December 2013.  Truckee Airport, near Lake Tahoe, was added as a destination in May 2014 and flights to Carlsbad and Oakland, California began in late 2014.  Service to San Jose International Airport was added in April 2016.  Weekend service to Las Vegas began in June 2017.

Kalaeloa Airport: Kalaeloa Airport (IATA: JRF, ICAO: PHJR, FAA LID: JRF) , also called John Rodgers Field (the original name of Honolulu International Airport) and formerly Naval Air Station Barbers Point, is a joint civil-military regional airport of the State of Hawaiʻ i established on July 1, 1999 to replace the Ford Island NALF facilities which closed on June 30 of the same year.  Located on the site of the developing unincorporated town of Kalaeloa and nestled between the Honolulu communities of ʻ Ewa Beach, Kapolei and Campbell Industrial Park in West Oʻ ahu, most flights to Kalaeloa Airport originate from commuter airports on the other Hawaiian islands.  While Kalaeloa Airport is primarily a commuter facility used by unscheduled air taxis, general aviation and transient and locally based military aircraft, the airport saw first-ever scheduled airline service begin on July 1, 2014, with Mokulele Airlines operating flights to Kahului Airport on Maui.

Hamburg Airport: Hamburg Airport (IATA: HAM, ICAO: EDDH) , known in German as "Flughafen Hamburg", is the international airport of Hamburg, the second-largest city in Germany.  It is located 8.5 km north of the city center in the Fuhlsbüttel quarter and serves as a base for Germanwings, Condor and easyJet.  Hamburg Airport is the fifth-busiest of Germany's commercial airports measured by the number of passengers and counted 16,223,968 passengers and 160,904 aircraft movements in 2016 and is named after Helmut Schmidt.  As of July 2017, it featured flights to more than 130 destinations of which four are long-haul routes to Dubai, Newark, Tabriz and Tehran.

Dornier Do 228: The Dornier Do 228 is a twin-turboprop STOL utility aircraft, manufactured by Dornier GmbH (later DASA Dornier, Fairchild-Dornier) from 1981 until 1998.  In 1983, Hindustan Aeronautics (HAL) bought a production licence and manufactured 125 aircraft.  In Oberpfaffenhofen, Germany, 245 were built, and 125 in Kanpur, India.  In July 2017, 63 aircraft were in airline service.

Supporting paragraphs: Daporijo Airport Dornier Do 228
Answer: 63