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Details for Benchmark: AA9244

N 40° 34.205 W 075° 29.257 (NAD 83)

Altitude: 386.9

Coordinates may not be exact. Altitude is GPS OBS and location is ADJUSTED. (more info)

Location:
In LEHIGH county, PA View Original Datasheet
Designation:
1N9 B
Marker Type:
metal rod
Setting:
stainless steel rod in sleve
Stability:
Most reliable and expected to hold position/elevation well.

Reference Points

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Documented History (by the NGS)

01/01/1994 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1994 (RAH) THE STATION IS LOCATED ABOUT 3.0 MI (4.8 KM) SOUTH OF DOWNTOWN ALLENTOWN, AT THE QUEEN CITY AIRPORT, NEAR THE INTERSECTION OF RUNWAYS 7-25 AND 14-32. OWNERSHIP--CITY OF ALLENTOWN. CONTACT JOE WILDMAN, AIRPORT MANAGER, QUEEN CITY AIRPORT, 1730 VULTEE ST, ALLENTOWN, PA 18103, PHONE 610-791-3241. TO REACH THE AIRPORT FROM THE JUNCTION OF INTERSTATE 78 (STATE HIGHWAY 309) AND LEHIGH STREET IN SOUTHERN ALLENTOWN, GO NORTH ON LEHIGH STREET 0.8 MI (1.3 KM) TO VULTEE STREET ON LEFT. TURN LEFT AND GO WEST 0.35 MI (0.56 KM) TO THE AIRPORT STRAIGHT AHEAD. TO REACH THIS STATION FROM THE AIRPORT ADMINISTRATION BUILDING, ENTER THE GATE ADJACENT TO THE NORTHWEST SIDE OF THE BUILDING AND PROCEED LEFT, SOUTH FOR ABOUT 250 FT (76.2 M) TO A TAXIWAY, TURN LEFT, SOUTH EAST AND GO 0.1 MI (0.2 KM) ON TAXIWAY TO THE INTERSECTION WITH TAXIWAY B, TURN RIGHT, SOUTHWEST AND GO 0.1 MI (0.2 KM) CROSSING RUNWAY 14-32 TO THE STATION ON THE RIGHT NEAR THE HOLDBAR. LOCATED 43.0 M (141.1 FT) SOUTHWEST OF THE SOUTHERNMOST RUNWAY LIGHT AT THE INTERSECTION OF RUNWAYS 7-25 AND 14-32, 26.7 M (87.6 FT) SOUTHEAST OF THE CENTERLINE OF THE TAXIWAY AT HOLDBAR, 14.2 M (46.6 FT) NORTHEAST OF A METAL STORM GRATE, AND 23.1 M (75.8 FT) NORTHWEST FROM THE EDGE OF RUNWAY 7-25. DESCRIBED BY KRN.
08/30/1994 by NGS (GOOD)
11/25/1996 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1996 (AJL) RECOVERED AS DESCRIBED.
11/21/1997 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1997 (JVS) RECOVERED AS DESCRIBED.

Control Text

  • This mark is at Allentown Queen City Airport (1N9)
  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in March 1998.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model.
  • GPS derived orthometric heights for airport stations designated as PACS or SACS are published to 2 decimal places. This maintains centimeter relative accuracy between the PACS and SACS. It does not indicate centimeter accuracy relative to other marks which are part of the NAVD 88 network.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.

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