Air Carrier Cargo (Freighter) Approaches
Log for December 15 - December 21, 2008


Summary of all air carrier cargo approach activity for this week
Type Total Count % of Total Average approaches per day Typical approaches on an active day
All approaches: 73 100% 10.43 18
ILS approaches over EDH: 55 75% 7.86 13
ILS over EDH in early a.m.: 21 29% 3.00 5

Crossing altitude statistics for ILS approaches

SiteMinimum
Altitude		Average
Altitude		Maximum
Altitude
Initial Approach Fix (CAMRR)3,9076,6078,786
El Dorado Hills west ridge crossing3,0773,9585,016


Distribution of crossing altitudes for ILS approaches
Crossing altitudes

Date Time Flight Aircraflt
Type		 Approach IAF
Altitude		 EDH
Ridge
Altitude		 EDH
Noise
Potential		 Notes
Dec. 15
Monday 		17:10:28 UPS2958 A300-600 ILS 4,360 3,832 low to moderate Arrived ~ 2,200 feet low at IAF, flew level at 4,000 feet across almost all of EDH and rural area west of IAF.
17:55:17 ABX406 767-200 ILS 8,786 4,295 low ~2,200 feet high at IAF, 400 feet high at EDH west ridge.
19:57:18 ABX1802 DC-9-40 north -- -- none
Dec. 16
Tuesday 		03:18:05 ABX1927 767-200 southeast -- -- none
03:37:26 UPS898 757-200 southwest -- -- none
04:18:49 UPS896 757-200 ILS 6,509 4,058 low
04:23:36 UPS954 757-200 southeast -- -- none Executed a circle over rural area south of EDH for spacing behind UPS896 on final approach.
05:04:56 UPS956 757-200 ILS 6,706 3,993 low 16:
06:14:13 UPS958 757-200 ILS 7,260 3,999 low
06:18:45 ABX806 767-200 ILS 6,946 4,019 low
06:48:04 UPS554 757-200 ILS 6,654 4,065 low
11:35:58 UPS2603 DC-8-70 ILS 8,271 4,242 low Measured Lmax = 72.9 dBA.
~1,300 feet above glide slope at IAF; used early gear extension and flaps ~30 degrees to get down to glide slope.
12:49:24 UPS2583 A300-600 ILS 6,509 4,101 low
16:13:21 UPS2860 757-200 ILS 6,535 4,058 low Measured Lmax = 70.1 dBA at west ridge.
17:22:14 UPS2962 757-200 ILS 6,631 4,738 low Measured Lmax = 61.5 dBA at west ridge.
~800 feet high at west ridge
17:58:30 ABX406 767-200 ILS 6,555 3,399 low to moderate ~500 feet low at west ridge
~18:34 UPS2960 757-200 ILS ? ? low Measured Lmax = 61.5 dBA at west ridge.
WebTrak data missing for this approach.
18:58:18 UPS2958 A300-600 ILS 6,496 3,999 low Lmax estimated ~69 dBA at west ridge
~19:11 UPS2964 757-200 ILS ? ? low Measured Lmax = 60.7 dBA at west ridge.
WebTrak data missing for this approach.
20:16:08 ABX1802 DC-9-40 north -- -- none Low (~3,000 ft) & level over communities west of Folsom but well clear of Folsom & EDH
Dec. 17
Wednesday		 03:21:12 UPS898 757-200 southwest -- -- none
03:32:11 ABX1927 767-200 south -- -- none
04:08:18 UPS896 757-200 ILS 6,693 4,091 low
4:13:04 UPS954 757-200 southeast -- -- none
04:58:03 UPS956 757-200 ILS 6,729 4,009 low
05:53:08 UPS958 A300-600 ILS 6,545 4,065 low
06:06:03 UPS554 757-200 ILS 6,594 4,009 low
06:27:06 ABX806 767-200 ILS 7,011 4,029 low to
moderate
12:12:46 UPS2583 A300-600 ILS 5,456 4,209 low .1,000 ft below glide slope at IAF (CAMRR), leveled at ~4,500 feet between CAMRR and Serrano.
12:34:16 UPS2603 757-200 ILS 7,533 4,009 low 1,000 ft above glide slope at IAF.
16:41:14UPS2962757-200southeast----lowNear Latrobe Road northbound, crossed US 50 near county line, joined ILS over Folsom.
16:53:10 UPS2960 757-200 ILS 7,280 4,012 low 800 ft above glide slope at IAF.
17:30:12 UPS2058 A300-600 ILS 7,064 4,675 low ~ 500-800 ft above glide slope at both IAF and west ridge.
18:01:22 ABX406 767-200 east south of 50 -- -- none
19:07:34 UPS2964 757-200 ILS 6,847 3,907 low
20:23:26 ABX1802 DC-9-40 north -- -- none Overflew Folsom, normally arrives west of Folsom.
Dec. 18
Thursday		 03:20:33 UPS898 757-200 southwest -- -- none
03:32:49 ABX1927 767-200 southeast -- -- none
04:07:57 UPS954 757-200 southeast -- -- none
04:11:08 UPS896 757-200 ILS 6,562 4,029 low
04:15:25 UPS554 757-200 ILS 6,568 4,026 low
04:22:44 UPS956 757-200 ILS 7,260 3,917 low
05:42:35 UPS958 A300-600 ILS 6,549 4,049 low
06:04:05 ABX806 767-200 ILS 6,873 4,029 low
10:52:04 UPS2603 DC-8-70 ILS 7,733 3,756 low ~1,200 feet above glide slope at IAF.
11:24:25 UPS2583 E300-600 ILS 5,079 3,097 low to moderate ~ 1,400 feet below glide slope at IAF, 800 feet below glide slope at EDH west ridge.
14:14:38 UPS2860 757-200 ILS 6,447 3,219 low to moderate Descended below glideslope while inbound from IAF, crossed EDH west ridge ~700 feet below glide slope.
16:35:03UPS2960757-200ILS6,9463,898low
16:57:03UPS2962757-200ILS6,5944,009low
17:15:27UPS2958A300-600ILS3,9073,130low to moderateArrived at IAF ~1,600 feet below glide slope, flew level at ~3,100 feet over all of EDH.
17:58:02ABX406767-200ILS6,5263,960low
18:55:37UPS2964757-200ILS7,1983,940low
20:12:51ABX1902DC-9-40north----none
Dec. 19
Friday		 03:24:49 ABX1927 767-200 south -- -- none
04:09:24 UPS896 757-200 ILS 6,483 4,052 low
04:16:15 UPS898 757-200 ILS 6,631 4,003 low
04:20:56 UPS954 757-200 south/ILS 4,032 3,967 low to moderate Entered area for normal left base entry south of 50, was vectored northeast for sequencing behind UPS898 for landing with a full ILS approach. Arrived at IAF low, flew level at ~4,000 feet from IAF to EDH west ridge.
04:55:03 UPS956 757-200 ILS 6,919 3,937 low
06:15:58 UPS958 A300-600 ILS 6,496 3,953 low
06:36:18 ABX806 767-200 ILS 6,870 3,960 low
08:12:11 TEC323 Emb. 135 southwest to ILS -- -- moderate Not a freighter approach:
The Intel Shuttle from Santa Clara extended its downwind leg, turned base south/southeast of EDH, and overflew EDH level at ~ 3,000 feet, turning onto final over the EDH west ridge.
08:29:22 N939AJ Emb. 135 south to ILS -- -- moderate Non-Intel Embraer 135 flew due north, level at ~3,000 feet over EDH, also turned onto final over the EDH west ridge.
08:39:25 UPS898 757-200 ILS 6,811 4,006 low
09:13:32TEC623Emb. 135southwest to ILS----moderateIntel Shuttle, same approach pattern as for the preceding Embraer approaches. Mather weather probably involves ground fog and/or low clouds, requiring approaches in actual instrument conditions and eliminating VFR shortcuts of the landing pattern.
17:34:33UPS2958A300-600ILS7,0373,963low
18:02:58ABX406767-200ILS6,1843,589low
19:11:31UPS2964757-200ILS6,4933,983low
20:20:50ABX1802DC-9-40north----nonePassed along west edge of Folsom.
21:33:58UPS993757-200ILS7,1564,383low
Dec. 20
Saturday		 08:02:50 UPS958 A300-600 ILS* 6,194 5,016 low
Unusual pattern, flight tracks suggest that Mather had ground fog and marginal visibility for landing under instrument flight rules. UPS993 flew inbound ~ 1/2 mile north of the ILS locator course, leveled at 5,000 feet at LDORR, and made a large circuit over Sacramento County before rejoining the ILS for landing. A Lear 40 that followed UPS993 shot a missed approach, apparently to Minimum Descent Altitude, then also did a large circuit over Sacramento County before rejoining the ILS for landing. Just before the Lear's missed approach a Beech King Air was able to take off from Mather for a short flight to Sac Exec, probably because takeoff requirements for RVR (Runway Visual Range) are less stringent than landing requirements.
17:33:52UPS2958A300-600ILS5,9613,540low
Dec. 21
Sunday		 17:40:57 EIA2974 747-100 southeast to ILS -- 3,077 moderate Evergreen International Airlines 747-100; low approach joined ILS over EDH west ridge, may have been an international flight.
18:47:48 UPS992 767-300 ILS 7,260 3,868 low
19:20:23 UPS958 757-200 ILS 6,978 3,881 low
20:23:51ABX1755767-200ILS7,8673,783low~1,500 feet above glide slope at IAF

For each approach a captured image of the overall approach track is linked to contents of the Approach column. For approaches over EDH a captured image of the approach track at the point of maximum noise exposure is linked to values in the Crossing Altitude column. In almost all cases this is the point of crossing the western ridge of El Dorado Hills, whose at a point whose elevation is approximately 1,100 feet. Crossing altitudes are MSL (relative to mean sea level), as reported in the WebTrak traces of flight paths. The approach of greatest interest for EDH noise issues is the ILS (Instrument Landing System) approach. For ILS approaches the flight track image linked to the Approach column shows the aircraft at the IAF (Initial Approach Fix). For approaches not crossing EDH the time cited is for an approximate point of closest approach to El Dorado Hills.

Color code for highlighting in the log table:          Early morning approach
(between 3:30 a.m. and about 6 a.m.)
        Noise potential for EDH at ridge was "none":
This approach did not overfly EDH.
Noise potential for EDH at ridge was "low":
Estimated Lmax around 70 dB or less, usually 65 to 70
          Noise potential for EDH at ridge was "low to moderate":
Estimated Lmax around 75 dB plus or minus 5 dB
        Noise potential for EDH at ridge was "moderate":
Estimated Lmax around 80 dB plus or minus 5 dB
        Noise potential for EDH at ridge was "high":
Estimated Lmax around 85 dB or more

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